WARNING
Before installing conversion
kit, be sure to clear rifle (TM 9-1005-249-10) and position selector lever on
SAFE.
WARNING
Do not load more than 10
cartridges in the magazine adapter assembly.
WARNING
Do not fire corroded
ammunition, dented cartridges with loose bullets, or cartridges exposed to
extreme heat (135°F
(57°C)) until they have cooled.
Do not lubricate cartridges.
A buildup of oil or grease may collect in the weapon and create excessive and
dangerous chamber pressure when fired.
WARNING
The magazine adapter is
under spring tension. Be careful and don’t let it get away from you. It could
be dangerous.
WARNING
Do not load ammunition into
the bolt adapter or snap the adapter bolt forward when the adapter is not
installed in the rifle.
TM 9-6920-363-12&P
C2
CHANGE HEADQUARTERS
DEPARTMENT OF THE ARMY
No. 2 Washington, DC, 21
August 1984
Operator’s and
Organizational Maintenance Manual
Including Repair Parts
and Special Tools List
CONVERSION KIT (CALIBER
.22 RIMFIRE ADAPTER) M261 (NSN 1005-01-010-1561)
FOR
RIFLE, 5.56-MM, M16 and
M16A1
TM 9-6920-363-12&P, 29
September 1980, is changed as follows:
1. Remove old pages and
insert new pages as indicated below. New or changed material is indicated by a
vertical bar in the margin of the page.
Remove Pages Insert Pages
None a (b Blank)
i through iii i through iii
1-1 (1-2 Blank) 1-1 (1-2
Blank)
2-3 through 2-8 2-3 through
2-8
3-1 and 3-2 3-1 and 3-2
4-3 and 4-4 4-3 and 4-4
4-7 and 4-8 4-7 and 4-8
B-1 and B-2 B-1 and B-2
C-3 (C-4 Blank) C-3 (C-4
Blank)
D-3 through D-7 (D-8 Blank)
D-3 through D-8
F-1 and F-2 F-1 and F-2
2. File this sheet and
previous change sheets in the back of the publication for reference purposes.
By Order of the Secretary of
the Army:
JOHN A. WICKHAM, JR.
General, United States Army
Official: Chief of Staff
ROBERT M. JOYCE
Major General, United States
Army
The Adjutant General
Distribution:
To be distributed in
accordance with DA Form 12-40, Organizational Maintenance requirements for
Rifle, 5.56MM,
M16, M16A1.
TM 9-6920-363-12&P
C1
CHANGE HEADQUARTERS
DEPARTMENT OF THE ARMY
No. 1 Washington, DC ,27
June 1983
Operator’s and
Organizational Maintenance Manual
Including Repair Parts
and Special Tools List
CONVERSION KIT (CALIBER
.22 RIMFIRE ADAPTER) M261 (NSN 1005-01-010-1561) FOR RIFLE, 5.56-MM, M16 and
M16A1
TM 9-6920-363-12&P, 29
September 1980, is changed as follows:
1. Remove old pages and
insert -new pages as indicated below. New or changed material is indicated by a
vertical bar in the margin of the page.
Remove Pages Inset Pages
i and ii i and ii
2-7 and 2-8 2-7 and 2-8
None 2-9 (2-10 Blank)
3-1 and 3-2 3-1 and 3-2
3-7 and 3-8 3-7 and 3-8
4-7 and 4-8 4-7 and 4-8
F-1 and F-2 F-1 and F-2
2. File this change sheet in
front of the publication for reference purposes.
By Order of the Secretary of
the Army:
E. C. MEYER
General, United States Army
Official: Chief of Staff
ROBERT M. JOYCE
Major General, United States
Army
The Adjutant General
Distribution :
To be distributed in
accordance with DA Form 12-40, Organizational Maintenance requirements for
Rifle, 5.56-MM, M16 and M16A1.
WARNING
Dry Cleaning Solvent (SD) is
flammable and toxic. Use it only in a well ventilated area. The use of rubber
gloves is necessary when washing the rimfire adapter to protect the skin.
WARNING
Safety goggles are required
for all shooters and other personnel in close proximity to the shooter. A
rimfire brass deflector installed on the rifle is also required. These items
will help prevent possible eye damage due to malfunctions that can occur.
WARNING
Positioning the cartridge
retainer on the bolt face properly is vital for safe conversion kit performance.
A damaged or improperly positioned cartridge retainer will cause a cartridge to
fire out of battery, possibly causing injury to the shooter and bystanders, or
resulting in a high malfunction rate.
Change 2 a(b Blank)
*TM 9-6920-363-12&P
Technical Manual
HEADQUARTERS
DEPARTMENT OF THE ARMY
No. TM 9-6920-363-12&P
Washington, DC, 29 September 1980
Operator’s and
Organizational Maintenance Manual
Including Repair Parts
and Special Tools List
CONVERSION KIT (CALIBER
.22 RIMFIRE ADAPTER) M261 (NSN 1005-01-010-1561) FOR RIFLE, 5.56-MM, M16 AND
M16A1
Current as of 30 May 1984
REPORTING ERRORS AND
RECOMMENDING IMPROVEMENTS
You can help improve this
manual. If you find any mistakes or if you know of a way to improve the
procedures, please let us know. Mail your letter, DA Form 2028 (Recommended
Changes to Publications and Blank Forms), or DA Form 2028-2 located in the back
of this manual direct to: Commander, US Army Armament, Munitions and Chemical
Command, ATTN: DRSMC-MAS (R), Rock Island, IL 61299. A reply will be furnished
to you.
Paragraph Page
CHAPTER 1. INTRODUCTION
....................................................................... 1-1
Section I. General
Information
........................................................................ 1-1
Scope
.........................................................................................................
1-1 1-1
Maintenance Forms and
Records .................................................................. 1-2
1-1
Administrative
Storage..................................................................................
1-3 1-1
Reporting Equipment
Improvement Recommendations (EIR) ............................ 1-4 1-1
Hand Receipt
..............................................................................................
1-5 1-1
II. Equipment Description
and Data ................................................................ 1-1
Description
..................................................................................................
1-6 1-1
Performance Data
........................................................................................
1-7 1-1
CHAPTER 2. OPERATING
INSTRUCTIONS ................................................... 2-1
Section I. Operating
Instructions
.................................................................... 2-1
General
.......................................................................................................
2-1 2-1
Installation of Bolt Adapter
Assembly ............................................................ 2-2 2-1
Installation of Magazine
Adapter Assembly .................................................... 2-3 2-3
Installation of Rimfire
Brass Deflector .............................................................
2-3.1 2-6
II. Preventive Maintenance
Checks and Services (PMCS)................................. 2-6.2
General
......................................................................................................
2-4 2-6.2
*This manual supersedes TM
9-6920-363-12&P, 15 March 1978.
Change 2 i
TM 9-6920-363-12&P
Paragraph Page
Section III. Operation Under
Unusual Conditions................................................ 2-8
General
........................................................................................................
2-5 2-8
IV. Ammunition
.............................................................................................
2-8
General
........................................................................................................
2-6 2-8
Identification and Markings
.............................................................................
2-7 2-9
Care, Handling, and
Preservation.....................................................................
2-8 2-9
CHAPTER 3. OPERATOR
MAINTENANCE INSTRUCTIONS ............................. 3-1
Section I. Lubrication
Instructions....................................................................
3-1
General
........................................................................................................
3-1 3-1
Bolt Adapter Assembly
.................................................................................
3-2 3-1
Magazine Adapter
Assembly..........................................................................
3-3 3-1
II. Troubleshooting
........................................................................................
3-1
General
.......................................................................................................
3-4 3-1
III. Maintenance of
Conversion Kit
.................................................................. 3-4
General
.......................................................................................................
3-5 3-4
Bolt Adapter Assembly
.................................................................................
3-6 3-4
Magazine Adapter
Assembly..........................................................................
3-7 3-7
CHAPTER 4. ORGANIZATIONAL
MAINTENANCE INSTRUCTIONS ................... 4-1
Section I. Service Upon
Receipt of Materiel ..................................................... 4-1
General
.......................................................................................................
4-1 4-1
Service Upon Receipt of
Materiel ................................................................... 4-2
4-1
II. Lubrication
Instructions..............................................................................
4-1
General
.......................................................................................................
4-3 4-1
Expendable and Consumable
Supplies .......................................................... 4-4 4-1
Lubrication of Bolt Adapter
Assembly ............................................................ 4-5 4-1
III. Preventive Maintenance
Checks and Services ............................................ 4-1
General
.......................................................................................................
4-6 4-1
IV. Troubleshooting
......................................................................................
4-2
General
......................................................................................................
4-7 4-2
V. Organizational
Maintenance Instructions ................................................... 4-4
Bolt Adapter Assembly
................................................................................
4-8 4-4
Change 1 ii
TM 9-6920-363-12&P
Illus *
Page Fig
APPENDIX A. REFERENCES
.......................................................................... A-1
APPENDIX B. COMPONENTS OF
END ITEM LIST ............................................ B-1
Section I. Introduction
......................................................................................
B-1
II. Integral Components of
the End Item.............................................................. B-2
III. Basic Issue Items
.......................................................................................
B-2
APPENDIX C. MAINTENANCE
ALLOCATION CHART ........................................ C-1
Section I. Introduction
.....................................................................................
C-1
II. Maintenance Allocation
Chart ...................................................................... C-3
III. Tool and Test Equipment
Requirements ....................................................... C-3
IV. Remarks
...................................................................................................
C-3
APPENDIX D. OPERATOR AND
ORGANIZATIONAL MAINTENANCE REPAIR
PARTS AND SPECIAL TOOLS LIST
D-1
Section I. Introduction
......................................................................................
D-1
II. Repair Parts List
..........................................................................................
D-5
Group 00 Conversion Kit
12003060 ....................................................................
D-5 D-1
01 Bolt Adapter Assembly
12003080 ..................................................................D-6
D-2
Section III. Special Tools
List
.............................................................................D-7
IV. National Stock Number
and Part Number Index ..............................................D-7
APPENDIX E. ADDITIONAL
AUTHORIZATION LIST .............................................E-1
Section I. Introduction
.......................................................................................E-1
II. Additional Authorization
List
...........................................................................E-1
APPENDIX F. EXPENDABLE
SUPPLIES AND MATERIALS LIST..........................F-1
Section I. Introduction
........................................................................................F-1
II. Expendable Supplies and
Materials List ...........................................................F-1
Change 2 iii
TM 9-6920-363-12&P
CHAPTER 1
INTRODUCTION
CHAPTER OVERVIEW
This chapter contains
general information equipment description and data about the conversion kit.
Section I. GENERAL
INFORMATION
1-1. SCOPE.
These instructions are for your use as the operator and organizational
maintenance personnel. They apply to the conversion kit (caliber .22
rimfire adapter) for 5.56-mm M16 and M16A1 rifles.
1-2. MAINTENANCE FORMS
AND RECORDS.
Maintenance forms and
records which you are required to use are listed and explained in DA PAM
738-750.
1-3. ADMINISTRATIVE
STORAGE. Refer to TM
740-90-1.
1-4. REPORTING EQUIPMENT
IMPROVEMENT
RECOMMENDATIONS (EIR). If
your conversion kit needs improvement, let us know. Send us an EIR. You, the
user, are the only one who can tell us what you don’t like about your
equipment. Let us know why you don’t like the design or performance. Put it on
an SF 368 (Quality Deficiency Report). Mail it to us at Commander, US Army
Armament, Munitions and Chemical Command, ATTN: DRSMC-MAO (R), Rock Island, IL
61299. We’ll send you a reply.
1-5. HAND RECEIPT.
This manual has a companion document with a TM number followed by
"-HR" (which stands for Hand Receipt). The TM 96920-363-12&P-HR
consists of preprinted hand receipts (DA Form 2062) that list end item related
equipment (i.e., COEI, BII, and AAL) you must account for. As an aid to property
accountability, additional -HR manuals may be requisitioned from the following
source in accordance with procedures in Chapter 3, AR 310-2: The US Army
Adjutant General Publications Center, 2800 Eastern Boulevard, Baltimore, MD
21220.
Section II. EQUIPMENT
DESCRIPTION AND DATA
1-6. DESCRIPTION.
a. General. The conversion
kit is designed to adapt the M16 and M16A1 rifles to fire caliber .22 rimfire
ammunition (long rifle standard velocity only). The conversion kit was developed
specifically for training purposes. Each conversion kit consists of one bolt
adapter assembly and three magazine adapter assemblies.
b. Bolt Adapter Assembly.
The bolt adapter assembly is designed to replace the standard bolt carrier group
without any modifications to the rifle. It will not change the appearance, feel,
or weight of the rifle, and it will not affect performance or operating
procedure when the rifle is in the semiautomatic mode. The rifle will not fire
in the automatic mode, nor will the bolt assist function when the bolt adapter
assembly is installed.
c. Magazine Adapter
Assembly. The magazine adapter assembly has a maximum capacity of 10 cartridges
and is designed to fit into a standard magazine.
1-7. PERFORMANCE DATA.
a. Bolt Adapter Assembly.
Length
............................. 222.25 mm (8.75 in.)
Weight..........................................
0.45 kg (1 lb)
b. Magazine Adapter
Assembly.
Ammunition:
Caliber.............................................................22
Type
........................... commercial long rifle ball
Length...............................................
76.2 mm (3 in.)
Weight
............................................... 113.4 g (4 oz)
Change 2 1-1 (1-2 Blank)
TM 9-6920-363-12&P
CHAPTER 2
OPERATING INSTRUCTIONS
CHAPTER OVERVIEW
This chapter contains all
the instructions required to operate the M16 and M16A1 rifles with the
conversion kit. It includes installation and operation of the conversion kit and
operator’s preventive maintenance checks and services.
Section I. OPERATING
INSTRUCTIONS
2-1. GENERAL.
a. This section contains
installation procedures and operating instructions required to maintain proper
operation of conversion kit with the M16 and M16A1 rifles.
b. For operating
instructions for the M16 and M16A1 rifles, refer to TM 91005-249-10.
c. Battle sight zero is
obtained at 25 meters using the procedures outlined in TM 9-1005-249-10.
d. At range up to 50 meters,
the .22 long rifle ammunition has generally the same trajectory as the 5.56 mm
ammunition.
e. At ranges of 75 and 125
meters the .22 long rifle ammunition requires hold-off aiming. The conversion
kit should not be used for longer ranges.
2-2. INSTALLATION OF BOLT
ADAPTER ASSEMBLY.
WARNING
Before installing conversion
kit, be sure to clear rifle (TM 9-1005-249-10) and position selector lever on
SAFE.
NOTE
Perform all maintenance
procedures on the rifle and magazine as required by TM 9-1005-249-10.
a. Remove bolt carrier
group.
1. DEPRESS TAKEDOWN PIN.
THEN PIVOT OPEN UPPER AND LOWER RECEIVERS
2-1
TM 9-6920-363-12&P
2. PULL
BACK CHARGING HANDLE AND BOLT CARRIER GROUP.
3. REMOVE
BOLT CARRIER GROUP.
b. Install bolt adapter
assembly.
CAUTION
Do not force the adapter
into the upper receiver.
NOTE
Before installing bolt
adapter assembly, visually inspect it for proper assembly and damaged or missing
parts. When retracting the bolt, ensure there is free movement between
bolt adapter assembly and slides of the receiver.
1. SLIDE
IN BOLT ADAPTER ASSEMBLY.
2-2
TM 9-6920-363-12&P
c. Perform functional check
of safe and semiautomatic modes in accordance with TM 9-1005-249-10.
d. Additional operating
information and safety equipment required when operating the M261 conversion kit
and the M16A1 rifle.
(1) The design and interface
of the M261 conversion kit and the M16A1 rifle are such that a Cal. .22 rimfire
cartridge can be fired by the breech bolt out of battery (cartridge not fully
chambered). The cartridge case will rupture when it is fired without support of
the chamber. In this case, the cartridge case can partially fragment, producing
the risk of eye injury to the shooter as well as to personnel near the ejection
port (right side) of the M16A1 rifle.
(2) Basic Issue Items (BII)
are additional equipment used for safety. Use these safety items when operating
and training with the M261 conversion kit.
(a) Wear goggles when firing
or when close to the shooter. If you wear eyeglasses, wear goggles over them.
(b) Install rimfire brass
deflector to trap ejected cartridge brass and any brass fragments during firing.
2. PUSH
IN CHARGING HANDLE AND BOLT ADAPTER ASSEMBLY TOGETHER.
CAUTION
Selector lever must be on
SAFE or SEMI before closing upper receiver.
3. CLOSE
UPPER AND LOWER RECEIVERS. PUSH IN TAKEDOWN PIN.
4. PULL
CHARGING HANDLE AND RELEASE TWO TIMES, SNAPPING THE BOLT FORWARD TO SEAT THE
ADAPTER.
Change 2 2-3
TM 9-6920-363-12&P
WARNING
Safety goggles are required
for all shooters and other personnel in close proximity to the shooter. A
rimfire brass deflector installed on the rifle is also required. These items
will help prevent possible eye damage due to malfunctions that can occur.
(3) With selector on safe,
close the adapter bolt by depressing the rifle bolt catch.
(4) Insert the magazine
containing the loaded magazine adapter into the rifle.
(5) Pull the charging handle
to the rear and release the handle so it will snap forward. DO NOT assist or
ride the charging handle forward.
(6) Place the selector on
SEMI position. The rifle is now ready to fire.
2-3. INSTALLATION OF
MAGAZINE ADAPTER ASSEMBLY.
WARNING
Do not load more than 10
cartridges in the magazine adapter assembly.
a. Loading the Magazine
Adapter Assembly. Load cartridges through the top of the magazine adapter
assembly, either before or after the adapter assembly is installed in the
magazine.
b. Installation of Magazine
Adapter Assembly.
1. POSITION
THE ADAPTER APPROXIMATELY IN THE CENTER AND DEPRESS MAGAZINE ADAPTER ASSEMBLY
INTO MAGAZINE.
Change 2 2-4
2. TILT
ADAPTER ASSEMBLY ON ANGLE; HOOK BASE OF ADAPTER ASSEMBLY UNDER MAGAZINE LIPS.
3. SLIDE
ADAPTER ASSEMBLY ALL THE WAY IN.
Change 2 2-4.1 (2-4.2
blank)
TM 9-6920-363-12&P
c. Installation of Magazine
in Rifle.
1 PUSH MAGAZINE UPWARD
UNTIL MAGAZINE CATCH ENGAGES AND HOLDS MAGAZINE.
2 TAP UPWARD TO MAKE SURE
MAGAZINE IS SEATED CORRECTLY.
2-5
TM 9-6920-363-12&P
2-3.1 INSTALLATION OF
RIMFIRE BRASS DEFLECTOR.
1 POSITION RIMFIRE BRASS
DEFLECTOR INTO HANDLE OPEN AREA.
2. ALINE DETENT PLUNGER
OF DEFLECTOR WITH HOLE IN HANDLE AND SNAP IN PLACE.
3 OPEN EJECTION PORT
COVER OF RIFLE AND LOWER RIMFIRE BRASS DEFLECTOR AGAINST RIFLE.
Change 2 2-6
TM 9-6920-363-12&P
Section II. PREVENTIVE
MAINTENANCE CHECKS AND SERVICES (PMCS)
2-4. GENERAL
a. To ensure maximum
efficiency in operation; the conversion kit must be systematically inspected at
intervals so defects can be discovered and corrected before they result in
serious damage or failure. Preventive maintenance includes inspection, cleaning,
lubrication, and repair. Always keep in mind the CAUTIONS and WARNINGS. Perform
your before (B), during (D), and after (A) PMCS. If your equipment fails to
operate, troubleshoot. Report any deficiencies using the proper forms. Refer to
TM 38-750. For authorized levels of repair, see the maintenance allocation chart
(MAC) in appendix B.
b. The PMCS table lists
those checks and services which are required when the conversion kit is used
with M16 and M16A1 rifles. All checks and services listed in the after (A)
operations column will be performed after removing the conversion kit from the
rifle (p3-6). The item number column shall be used as a source of item numbers
for the TM number column on DA Form 2404, Equipment Inspection and Maintenance
Worksheet, in recording results of PMCS.
c. Preventive maintenance
checks and services for M16 and M16A1 rifles will be performed by the rifle
operators as directed in TM 9-1005-249-10.
Table 2-1. PREVENTIVE
MAINTENANCE CHECKS AND SERVICES
NOTE
Within designated interval,
these checks are to be performed in the order listed.
B-Before D-During A-After
Interval
ITEM TO BE INSPECTED Equipment is not ready/ Item available if: no. B D A
Procedures
1.
· l BOLT ADAPTER ASSEMBLY
a.
Visually inspect for proper assembly and check for Parts are damaged or missing
parts. Report damaged or missing, missing parts to organizational maintenance.
If re- damaged, or quired, perform cleaning and lubrication procedures
improperly before installing. Refer to page 3-1. assembled.
b.
After installing, retract bolt to ensure free movement. It binds.
c.
Perform functional check to ensure proper opera- It fails function. Refer to TM
9-1005-249-10. tional check.
BOLT
ADAPTER ASSEMBLY
Change 2 2-6.2 (2-6.1
blank)
TM 9-6920-363-12&P
Table 2-1. PREVENTIVE
MAINTENANCE CHECKS AND SERVICES (CONT)
B-Before D-During A-After
INTERVAL
ITEM Equipment is not
NO. B D A Item to be
inspected procedure ready/available if:
2.
l BOLT ADAPTER ASSEMBLY
a.
Perform cleaning and lubrication procedures for every 500 rounds fired. Refer to
page 3-1.
b.
Use procedures listed in TM 91005-249-10 to correct any malfunctions/stoppages.
If bolt is malfunctioning, turn over to organizational maintenance.
3.
l BOLT ADAPTER ASSEMBLY
a.
Perform cleaning and lubrication procedures.
Refer
to page 3-1.
b.
Inspect for worn spots and damaged parts. Report
all damaged parts to organizational maintenance. If, excessive carbon build up,
turn in to organizational maintenance (unit armorer).
4.
l MAGAZINE ADAPTER ASSEMBLY Parts are visually inspect for proper assembly and
damaged or missing, missing parts. Report damaged or missing parts to or-
damaged, or ganizational maintenance. If
required, clean and lubri- improperly cate before installation. Refer to page
3-1. assembled.
5.
l MAGAZINE ADAPTER ASSEMBLY Perform cleaning and lubrication procedures for
every 500 rounds fired. Refer to page 3-1.
6.
l MAGAZINE ADAPTER ASSEMBLY
a.
Perform cleaning and lubrication procedures. Refer to page 3-1.
b.
Inspect for damaged parts. If damaged, turn in to organizational maintenance for
repair/replacement. Clean and
lubricate. Refer to page 3-1.
Change 2 2-7
TM 9-6920-363-12&P
Section III. OPERATION
UNDER UNUSUAL CONDITIONS
2-5. GENERAL.
For operation of the M16 and M16A1 rifle under unusual conditions, refer to TM
9-1005-249-10.
Section IV. AMMUNITION
2-6. GENERAL.
CAUTION
Continuous firing (400-1000
rounds per weapon) of M861 cal.22 rimfire tracer ammo will result in lead
particles fouling the M16A1 rifle gas system. This will cause the weapon not to
fire in either semi-automatic or automatic mode. However, firing regular M193
5.56-mm ball ammo will clear the gas system. You should therefore do the
following to prevent permanent blockage of the gas system and to clear the rifle
of fouling:
ΠAt
the end of each training session .(typically 400-1000 rounds per weapon), remove
the rimfire adapter and reinstall the bolt carrier.
Fire a 20/30 round magazine of 5.56-mm M193 ball ammo in the automatic
mode in short bursts of 4 to 5 rounds. Œ
If the rifle won’t
fire in either semi or automatic mode, manually recharge and fire the weapon
(using 5.56-mm ball ammo) for up to 10 rounds.
Then fire an entire magazine as described above. This will clean the gas
system so you can resume subcaliber firing.
Do not use western T-22 cal .22 ammunition in the rimfire adapters.
a. Either the standard long
rifle (ball), match, or M861 cal .22 rimfire tracer ammunition can be used with
the M261 conversion kit.
b. These are small arms
ammunitions which are issued as complete rounds. A complete round (cartridge)
consists of all the components necessary to fire the weapon once; that is, the
projectile (bullet), cartridge case, propellant, and primer. The rimfire
cartridge is composed of a brass case, a propellant, and a lead or lead-alloy
bullet. The cartridge is approximately 1.0 inch long.
c. For information on
malfunctions involving ammunition and explosives, refer to AR 700-1300-8.
Change 1 2-8
TM 9-6920-363-12&P
2-7.IDENTIFICATION AND
MARKINGS.
a. General. The ammunition
is identified by information on the ammunition box. When ammunition is removed
from its original box, the identification information, including nomenclature,
shall be kept with the ammunition.
b. Markings. The
manufacturer’s identification is stamped on the head of the cartridge case.
2-8.CARE, HANDLING, AND)
PRESERVATION.
a. Ammunition is packed to
withstand conditions normally encountered in handling, storage, transport, and
field use.
b. Damaged ammunition boxes
must be repaired or replaced immediately, with all identification markings
transferred to the new ammunition boxes.
c. Cartridges should be
protected from extended exposure to direct sunlight, moisture, and excessive
humidity. Such exposure affects ballistic performance of cartridges.
d. Keep cartridges dry,
clean, and free of corrosion by wiping with a dry, clean cloth.
e. Do not bend or score the
soft lead nose of the bullet during magazine loading.
f. The cartridge case should
be fully to the rear of the adapter.
WARNING
Do not fire corroded
ammunition, dented cartridges, cartridges with loose bullets, or cartridges
exposed to extreme heat, 135°F (57°C), until they have cooled.
Do not lubricate cartridges. A buildup of oil or grease may collect in
the weapon and create excessive and dangerous chamber pressure when fired.
g. For additional
instructions in the care, handling, and preservation of ammunition, refer to TM
9-1300-206.
Change 1 2-9 (2-10 Blank)
TM 9-6920-363-12&P
CHAPTER 3
OPERATOR MAINTENANCE
INSTRUCTIONS
CHAPTER OVERVIEW
This chapter contains the
instructions and information needed by the operator to keep the conversion kit
in good operating condition. This chapter includes:
a. Lubrication
instructions.
b. Troubleshooting.
c. Maintenance
instructions.
Section I. LUBRICATION
INSTRUCTIONS
3-1. GENERAL.
a. This section contains
pertinent lubrication instructions for operator maintenance.
b. For lubrication
instructions for the M16 and M16A1 rifles, refer to TM 9-1005-24910.
c. For expendable supplies
and materials authorized, refer to appendix F.
3-2. BOLT ADAPTER
ASSEMBLY.
a. Disassemble bolt adapter
assembly (p 3-4).
b. Wipe all parts clean with
clean rags (item 9, app F) or swabs (item 10, app F) and cleaner, lubricant and
preservative (CLP) (item 4, app F). Then heavily lubricate outer surfaces of
straight pin, spring, guide rail, bolt, and rail support with CLP.
3-3. MAGAZINE ADAPTER
ASSEMBLIY.
a. Disassemble magazine
adapter assembly (para 3-7b).
b. Wipe all parts clean with
clean rags or swabs and CLP. Then lightly lubricate spring with CLP.
Section II.
TROUBLESHOOTING
3-4. GENERAL.
a. This section contains the
troubleshooting information for locating and correcting most of the operating
troubles which may develop while the conversion kit is being used with M16 and
M16A1 rifles. Each malfunction is followed by a list of test or inspections
which will help you to determine the corrective actions for you to take. You
should perform the tests/inspections and corrective actions in the order listed.
Table 3-1. TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. FAILS TO FIRE
Step 1. Check for broken or
defective firing pin.
Notify organizational
maintenance.
Step 2. Check for carbon or
fouling accumulation on firing pin.
Notify organizational
maintenance.
Step 3. Check for improperly
assembled bolt adapter assembly and worn, broken, or missing parts.
Notify organizational
maintenance.
Change 1 3-1
TM 9-6920-363-12&P
Table 3-1. TROUBLESHOOTING
(CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 4. Check for too much
oil in firing pin recess of bolt. Wipe
off excess oil.
Step 5. Check for dirty or
unlubricated adapters. Clean and
lubricate.
Step 6. Fails to fire after
first round or every other round. Check
selector to be sure it is on SEMI.
2. FAILS TO EXTRACT
Step 1. If firing tracer
ammo, check for fouling of gas system. Refer
to CAUTION on page 2-8.
Step 2. Check for dirty or
corroded ammunition. Remove
ammunition from magazine and clean.
Step 3. Check for carbon
buildup in extractor recess or extractor lip.
Notify organizational maintenance.
Step 4. Check for defective
extractor, extractor spring, and extractor plunger. Notify organizational maintenance.
Step 5. Check for improperly
assembled bolt adapter assembly and worn, broken, or missing parts.
Notify organizational maintenance.
3. FAILS TO EJECT
Step 1. Check for improperly
assembled bolt adapter assembly and worn, broken, or missing parts.
Notify organizational maintenance.
Step 2. Check for defective
extractor, extractor spring, and extractor plunger. Notify organizational maintenance.
Step 3. Check for bent or
improperly assembled cartridge retainer. Notify
organizational maintenance for replacement.
4. FAILS TO FEED
Step 1. Check for improperly
seated magazine. Tap upward on
bottom of magazine. (To adjust
magazine catch, refer to TM 91005-249-10.)
Step 2. Check for dirty or
corroded ammunition. Remove
ammunition from magazine adapter assembly and clean.
Step 3. Check for dirty
magazine adapter assembly. Disassemble
and clean.
Step 4. Check for too many
rounds loaded in magazine adapter assembly.
Remove excess round(s).
Step 5. Check for improper
installation of magazine adapter assembly in standard magazine.
Remove and install properly.
Change 2 3-2
TM 9-6920-363-12&P
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 6. Check for burred or
broken lips on magazine adapter assembly. Replace
magazine adapter assembly.
Step 7. Check for defective
follower on magazine adapter assembly. Replace
magazine adapter assembly.
Step 8. Check for weak or
broken magazine adapter assembly spring. Replace
magazine adapter assembly.
Step 9. Check for dented or
damaged magazine adapter assembly. Replace
magazine adapter assembly.
5. HAS DOUBLE FEED
Check for defective magazine
adapter assembly. Replace magazine
adapter assembly.
6. FAILS TO CHAMBER
Step 1. Check for dirty or
corroded ammunition. Remove
ammunition from magazine adapter assembly and clean.
Step 2. Check for damaged
ammunition. Replace ammunition.
7. FAILS TO LOCK
Step 1. Check for restricted
movement of bolt adapter assembly. Perform
normal cleaning and lubricating procedures to bolt adapter assembly. Clean and
lubricate receiver (TM 91005-24910). With the upper receiver held in the upright
position and the charging handle removed, install the bolt adapter assembly.
Slowly slide the bolt adapter assembly back and forth on the slides of the
receiver to determine proper fit, alinement, and free movement. If binding
occurs, turn the bolt adapter assembly in to organizational maintenance.
Step 2. Check for improperly
assembled bolt adapter assembly and worn, broken, or missing parts.
Notify organizational maintenance.
8. HAS SHORT RECOIL
Check for restricted
movement of bolt adapter assembly.
See step 1 of malfunction 7,
FAILS TO LOCK..
b. This manual cannot list
all possible malfunctions that may occur, nor all tests or inspections and
corrective actions. If a malfunction is not listed (except when malfunctions and
causes are obvious), or is not corrected by listed corrective actions, notify
your supervisor.
NOTE
When substandard, corroded
or damaged caliber .22 ammunition is used, malfunctions listed in
troubleshooting table will occur.
c. For troubleshooting
procedures for M16 and M16A1 rifles, refer to TM 9-1005-24910.
3-3
TM 9-6920-363-12&P
Section III. MAINTENANCE
OF CONVERSION KIT
3-5. GENERAL.
Operator maintenance of conversion kit consists of removal, disassembly,
cleaning, inspection, and assembly procedures in accordance with the maintenance
allocation chart (app C) and the instructions contained in this section.
3-6. BOLT ADAPTER
ASSEMBLY
NOTE
Disassembly by operator will
be limited to removal of straight pin, spring, and bolt.
a. Remove bolt adapter
assembly.
1 DEPRESS TAKEDOWN PIN.
THEN PIVOT OPEN UPPER AND LOWER RECEIVERS.
2 PULL BACK CHARGING
HANDLE AND BOLT ADAPTER ASSEMBLY.
3 REMOVE BOLT ADAPTER
ASSEMBLY.
3-4
TM 9-6920-363-12&P
b. Disassemble bolt adapter
assembly.
1 PUSH THE BOLT ONE-HALF
INCH TO THE REAR AND ROTATE THE BOLT COUNTERCLOCKWISE TO
REMOVE FROM THE GUIDE
RAIL, THEN MOVE IT FORWARD OFF THE SPRING AND STRAIGHT PIN.
2 REMOVE SPRING AND
STRAIGHT PIN.
WARNING
Do not load ammunition into
the bolt adapter or snap the adapter bolt forward when the adapter is not
installed in the rifle.
3-5
TM 9.6920-363-12&P
c. Clean, inspect, and
repair the bolt adapter assembly as follows:
(1) Cleaning.
(a) Using a small bore
brush, remove carbon deposits, corrosion, and dirt from all parts. After
cleaning, wipe all parts clean with clean swabs or rags.
(b) Inspect interior parts
of bolt adapter assembly for carbon buildup. If identified, turn in to
organizational maintenance for cleaning.
(2) Inspection. Inspect all
parts for serviceability. Inspect for bent, worn, broken, or missing parts.
(3) Repair. Turn bolt
adapter assembly in to organizational maintenance for repair.
d. Assemble bolt adapter
assembly.
1 INSTALL STRAIGHT PIN
AND SPRING.
2 INSTALL BOLT TO
STRAIGHT PIN AND SPRING. COMPRESS SPRING UNTIL CONNECTION ON BOLT IS
ALINED WITH CONNECTION ON
RAIL. ROTATE BOLT CLOCKWISE TO CONNECT ITTO THE RAIL. ALLOW
BOLT TO CLOSE.
3-6
TM 9-6920-363-12&P
3-7. MAGAZINE ADAPTER
ASSEMBLY.
a. Remove magazine and
magazine assembly.
1 REMOVE MAGAZINE FROM
RIFLE BY PRESSING CATCH BUTTON AND PULLING MAGAZINE DOWN.
WARNING
The magazine adapter is
under spring tension.
Be careful and don’t let
it get away from you. It could be dangerous.
2 PRESS THE REAR OF THE
MAGAZINE
ADAPTER ASSEMBLY DOWN.
THEN RAISE
THE FRONT SLIGHTLY AND
SLIDE THE
ADAPTER FORWARD TO
REMOVE.
3-7
TM 9-6920-363-12&P
b. Disassemble magazine
adapter assembly.
1 PULL UP TO RELEASE
MAGAZINE BASE. 2 REMOVE MAGAZINE BASE.
CATCH
3 REMOVE MAGAZINE BASE
CATCH, SPRING, AND FOLLOWER.
c. Clean dirt or corrosion
from magazine tube spring and follower. Using swabs (item 10, app F), rags (item
9, app F), and CLP (item 4, app F), clean and lubricate.
d. Inspect all parts for
serviceability. Inspect magazine tube for dents, cracks, and bent or damaged
feeder lips. If any of the parts are missing, worn, broken, or otherwise
defective, report to organizational maintenance for replacement.
Change 1 3-8
TM 9-6920-363-12&P
e. Assemble magazine adapter
assembly.
1 INSTALL FOLLOWER,
SPRING, AND MAGAZINE BASE CATCH.
2. INSTALL
MAGAZINE BASE.
3-9/(3-10 BLANK)
TM 9-6920-36312&P
CHAPTER 4
ORGANIZATIONAL
MAINTENANCE INSTRUCTIONS
CHAPTER OVERVIEW
This chapter contains the
instructions and information needed by organizational maintenance personnel to
keep the conversion kit in good repair. This chapter includes:
a. Service upon receipt of
materiel
b. Lubrication instructions
e. Maintenance
instructions.
Section I. SERVICE UPON
RECEIPT OF MATERIEL
4-1. GENERAL.
a. When conversion kits are
received, it is the responsibility of the officer in charge to determine whether
the materiel has been properly prepared for service by the supplying
organization and to be sure it is in condition to perform its function.
b. A record will be made of
all missing parts and/or malfunctions and will be reported through appropriate
channels. Corrective action will be initiated as quickly as possible.
4-2. SERVICE UPON RECEIPT
OF MATERIEL.
a. Conversion Kit.
(1) Visually inspect the
bolt adapter assembly and magazine adapter assembly for proper assembly and
damaged or missing parts.
(2) Clean and lubricate (p
3-1).
b. M16 and M16A1 Rifles.
Refer to TM 9-1005-249-20 for service upon receipt of materiel.
Section II. LUBRICATION
INSTRUCTIONS
4-3. GENERAL.
This section contains pertinent lubrication instructions for organizational
maintenance.
4-4. EXPENDABLE AND
CONSUMABLE SUPPLIES.
A list of expendable and
consumable supplies used in the care, cleaning, lubricating, and maintenance of
the equipment is contained in appendix F.
4-5. LUBRICATION OF BOLT
ADAPTER
ASSEMBLY.
a. Disassembly. Refer to
page 3-4.
b. Cleaning. Refer to page
3-6.
c. Lubrication. Refer to
page 3-1 and appendix
F.
NOTE
Do not lubricate inside the
bolt adapter assembly barrel or recesses.
(1) Lightly lubricate outer
surface of bolt, rail support, guide rail, support lug, and barrel.
(2) Lightly lubricate firing
pin, extractor plunger, and extractor.
Section III. PREVENTIVE
MAINTENANCE CHECKS AND SERVICES (PMCS)
4-6. GENERAL. For
preventive maintenance checks and services to be performed by organizational
maintenance, refer to the following table.
4-1
TM 9-6920-363-12&P
Table 4-1. ORGANIZATIONAL
PREVENTIVE MAINTENANCE CHECKS AND SERVICES QUARTERLY SCHEDULE
Item
Item to be
No. inspected Procedures
1 Conversion Kit Visually
inspect for:
Proper assembly
Damaged parts
Missing parts
Excessive carbon buildup on
internal parts
Section IV.
TROUBLESHOOTING
4-7. GENERAL.
a. This section contains the
troubleshooting information for locating and correcting most of the operating
troubles which may develop while the conversion kit is being used with M16 and
M16A1 rifles. Each malfunction is followed by a list of tests or inspections
which will help you to determine the corrective actions for you to take. You
should perform the tests/inspections and corrective actions in the order listed.
Table 4-2. TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. FAILS TO FIRE
Step 1. Check for broken or
defective firing pin. Replace
firing pin.
Step 2. Check for carbon or
fouling accumulation on firing pin. Clean
firing pin.
Step 3. Check for improperly
assembled bolt adapter assembly and worn, broken or missing parts.
Replace worn, broken, or missing parts; assemble correctly (p 3-6).
Step 4. Check for too much
oil in firing pin recess of bolt.
Wipe off excess oil. 4-2
TM 9-6920-363-12&P
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. FAILS TO EXTRACT
Step 1. Check for carbon
buildup in extractor recess or extractor lip.
Remove carbon.
Step 2. Check for defective
extractor, extractor spring, and extractor plunger. Replace defective parts.
Step 3. Check for improperly
assembled bolt adapter assembly and worn, broken, or missing parts.
Replace worn, broken, or missing parts; assemble correctly.
3. FAILS TO EJECT
Step 1. Check for improperly
assembled bolt adapter assembly and worn, broken, or missing parts.
Replace worn broken, or missing parts; assemble correctly.
Step 2. Check for defective
extractor, extractor spring, extractor plunger, and cartridge retainer.
Replace defective parts.
4. FAILS TO LOCK
Step 1. Check for restricted
movement of bolt adapter assembly. Perform
normal cleaning and lubricating procedures to bolt adapter assembly. Clean and
lubricate receiver (refer to TM 91005-24910). With the upper receiver held in
the upright position and the charging handle removed, install the bolt adapter
assembly. Slowly slide the bolt adapter assembly back and forth on the slides of
the receiver to determine proper fit, alinement, and free movement. If binding
occurs, get a new kit.
Step 2. Check for improperly
assembled bolt adapter assembly and worn, broken, or missing parts.
Replace worn, broken, or missing parts; assemble correctly (p 3-6).
5. HAS SHORT RECOIL
Check for restricted
movement of bolt adapter assembly. See
step 1 of malfunction 4, FAILS TO LOCK.
b. This manual cannot list
all possible malfunctions that may occur, nor all tests or inspections and
corrective actions. If a malfunction is not listed (except when malfunctions and
cause are obvious), or is not corrected by listed corrective actions, notify
your supervisor.
NOTE
When substandard, corroded,
or damaged caliber .22 ammunition is used, malfunctions listed in
troubleshooting table will occur.
c. For troubleshooting
procedures for M16 and M16A1 rifles, refer to TM 9-1005-249-20.
Change 2 4-3
TM 9-6920-363-12&P
Section V. ORGANIZATIONAL
MAINTENANCE INSTRUCTIONS
4-8. BOLT ADAPTER
ASSEMBLY.
This task covers:
a. Disassembly c. Repair
b. Cleaning/inspection d.
Assembly
INITIAL SETUP
Applicable Configuration
Troubleshooting References
All Page 4-2 of this manual
Test Equipment, Special
Tools Equipment Condition Materials/Parts Assembled
Bore Brush Special Safety
Instructions
Rags Make certain there
Cleaner, Lubricant and is no
ammunition in
Preservative (CLP) the
adapter.
References Approximate Time
Required
None See MAC (app C)
LOCATION ITEM ACTION
REMARKS
DISASSEMBLY
Bolt Adapter Barrel, guide
Disassemble. Refer to page 3-5.
Assembly rail, and rail
support group (1)
Bolt (2)
Spring (3)
Straight pin (4)
Change 2 4-4
TM 9-6920-363-12&P
LOCATION ITEM ACTION
REMARKS
Barrel, Guide Barrel
retaining Disassemble. Use hammer and punch Rail and Rail pin (5) to remove
barrel Support Group Barrel (6) retaining pin.
Guide rail and support group (7)
Guide Rail and Retaining
screw (8) Disassemble. Use socket head screw
Support Group Position
spring (9) key to remove retaining
Support lug (10) screw (8).
Guide rail and support (11)
4-5
TM 9-6920-363-12&P
4-8. BOLT ADAPTER
ASSEMBLY (CONT).
DISASSEMBLY (CONT)
Guide Rail Cap screw (12)
Disassemble. Use socket head screw and Support Rail support (13) key to remove
cap Guide rail (14) screw (12).
Bolt Group Headless.
Disassemble. Push in on firing pin straight pin (15) and push out headless
Firing pin (16) straight
pin.
Firing pin spring (17)
Straight pin (18)
Bolt body (19)
4-6
TM 9-6920-363-12&P
LOCATION ITEM ACTION
REMARKS
Bolt
Body Cartridge Disassemble. Push up on cartridge retainer (20) retainer to
remove.
Extractor
(21)
Extractor
plunger (22)
Extractor
spring (23)
Bolt
(24)
Use a pointed instrument to
depress extractor spring and extractor plunger. Use a wire to disengage
extractor.
4-7
TM 9-6920-363-12&P
4-8.BOLT ADAPTER ASSEMBLY
(CONT).
LOCATION ITEM ACTION
REMARKS
CLEANING/INSPECTION
Bolt Adapter (1) Using a
small Assembly bore brush dipped in CLP (item 4, app F), remove carbon
de-posits, corrosion, and dirt from all parts. After cleaning, wipe all parts
dry with clean swabs (item 10, app F) or rags (item 9, app F).
(2) Inspect all parts for
serviceability.
(3) Prior to assem-bly, coat
all parts with a light film of CLP (item 4, app F).
REPAIR
Bolt Adapter Replace all
Shorten retainer screw Assembly unserviceable (see p 4-5, item 8) to authorized
parts. thread length of 3/4 in.
REASSEMBLY
WARNING
Positioning the cartridge
retainer on the bolt face properly is vital for safe conversion kit performance.
A damaged or improperly positioned cartridge retainer will cause a cartridge to
fire out of battery, possibly causing injury to the shooter and bystanders, or
result in a high malfunction rate.
Bolt Body Bolt (1) Assemble.
Slide cartridge retainer
Extractor spring (2) down to
install.
Extractor plunger (3)
Extractor (4)
Cartridge retainer (5)
Change 2 4-8
LOCATION ITEM ACTION
REMARKS
Bolt Assembly Bolt Body (6)
Assemble. Push in and turn firing
Straight pin (7) pin (9)
until the slot
Firing pin spring (8) is
alined with the pin
Firing pin (9) hole, then
install
Headless straight straight
pin (10).
pin (10)
Guide Rail Guide rail (11)
Assemble. Use socket head screw and Support Rail support (12) key to install cap
Cap screw (13) screw (13).
4-9
TM 9-6920-363-12&P
4-8. BOLT ADAPTER
ASSEMBLY (CONT).
LOCATION ITEM ACTION
REMARKS
REASSEMBLY (CONT)
Guide Rail Guide rail and
Assemble. Use socket head screw and Support Group support (14) key to install
retaining
Support lug (15) screw.
Position spring (16)
Retaining screw (17)
Barrel, Guide Guide rail and
Assemble. Use hammer and punch to Rail and Rail support group (18) install
barrel retaining
Support Group Barrel (19)
pin.
Barrel retaining pin (20)
4-10
TM 9-6920-363-12&P
LOCATION ITEM ACTION
REMARKS
Bolt Adapter Barrel, guide
rail, Assemble. Refer to page 3-6.
Assembly and rail support
group (21)
Straight pin (22)
Spring (23)
Bolt assembly (24)
4-11(4-12 Blank)
TM 9-6920-363-12&P
APPENDIX A
REFERENCES
A-1. GENERAL.
Consult the following publications frequently for the latest changes or
revisions of references and for new publications relating to material covered in
this manual.
A-2. OTHER PUBLICATIONS.
SB 708-41/42---
....................................................Federal Supply Code for
Manufacturers - United States and Canada
name to code and code to
name
SC 4933-95-CL-A07
............................................Tool Kit, Small Arms Repairman
TM 38-750
........................................................The Army Maintenance
Management System (TAMMS)
TM 740-90-1
........................................................Administrative Storage
of Equipment
TM
9-1005-249-10................................................Operator’s
Manual: M16A1 Rifle
TM
9-1005249-20.................................................Organizational
Maintenance Manual Including Repair Parts and Special
Tools Lists: Rifle, 5.56-MM,
M16A1, w/e (1005-00-073-9421); Rifle,
5.56-MM, M16
(1005-00-856-6885) Bipod, Rifle, M3 w/Carrying Case
(1005-00-890-2609)
TM
9-1300-206.....................................................Ammunition and
Explosives Standards
A-1 (A-2 Blank)
TM 9-6920-363-12&P
APPENDIX B
COMPONENTS OF END ITEM
LIST
Section I. INTRODUCTION
B-1. SCOPE.
This appendix lists integral components of and basic issue items for the
conversion kit to help you inventory items required for safe and efficient
operation.
B-2. GENERAL.
This Components of End Item List is divided into the following sections:
a. Section II. Integral
Components of the End Item. These items, when assembled, comprise the conversion
kit and must accompany it whenever it is transferred or turned in. The
illustrations will help you identify these items.
b. Section III. Basic Issue
Items. These are the minimum essential items required to place the conversion
kit in operation, to operate it, and to perform emergency repairs. Although
shipped separately packed they must accompany the conversion kit during
operation and whenever it is transferred between accountable officers.
The illustrations will assist you with hard-to-identify items. This
manual is your authority to requisition replacement BII, based on TOE/MTOE
authorization of the end item.
B-3. EXPLANATION OF
COLUMNS.
a. Illustration. This column
is divided as follows:
(1) Figure Number. Indicates
the figure number of the illustration on which the item is shown.
(2) Item Number. The number
used to identify item called out in the illustration.
b. National Stock Number.
Indicates the National stock number assigned to the item and which will be used
for requisitioning.
c. Part Number. Indicates
the primary number used by the manufacturer, which controls the design and
characteristics of the item by means of its engineering drawings,
specifications, standards, and inspection requirements to identify an item or
range of items.
d. Description. Indicates
the Federal item name and, if required, a minimum description to identify the
item.
e. Location. The physical
location of each item listed is given in this column. The lists are designed to
inventory all items in one are of the major item before moving on to an adjacent
area.
f. Usable on Code. Not
applicable.
g. Quantity Required (Qty
Reqd). This column lists the quantity of each item required for a complete major
item.
h. Quantity. This column is
left blank for use during and inventory. Under the Rcv’d column, list the
quantity you actually receive on your major item. The Date columns are for your
use when you inventory the major item at a later date; such as for shipment to
another site.
B-1
TM 9-6920-363-12&P
Section II INTEGRAL
COMPONENTS OF END ITEM
(1) (2) (3) (4) (5) (6)
(7) (8)
Illustration Quantity
(a) (b) National Usable
Figure Item Stock On Qty
Rev’d Date Date Date
No. No. Number Part No.
Description Location Code Reqd
Section III. BASIC ISSUE
ITEMS
Figure B-1. Basic issue
items.
(1) (2) (3) (4) (5) (6)
(7) (8)
Illustration Quantity
(a) (b) National Usable
Figure Item Stock On Qty
Rcv’d Date Date Date
No. No. Number Part No.
Description Location Code Reqd
B-1 1 1005-01- 9378328 Brass
1
171-4778 Deflector,
Rimfire
B-1 2 4240-00 A-A-1110
Goggles, 2
052-3776 Industrial
None authorized
Change 2 B-2
TM 9-6920-363-12&P
APPENDIX C
MAINTENANCE ALLOCATION
CHART
Section I. INTRODUCTION
C-1. GENERAL.
a. This section provides a
general explanation of all maintenance and repair functions authorized at
various maintenance categories.
b. The Maintenance
Allocation Chart (MAC) in section II designates overall responsibility for the
performance of maintenance functions on the identified end item or component.
The implementation of the maintenance functions upon the end item or component
will be consistent with the assigned maintenance functions.
c. Section III lists the
special tools and test equipment required for each maintenance function as
referenced from section II.
d. Section IV contains
supplemental instructions and explanatory notes for a particular maintenance
function.
C-2. MAINTENANCE FUNCTIONS.
Maintenance functions will be limited to and defined as follows:
(except for ammunition
MAC1).
a. Inspect. To determine the
serviceability of an item by comparing its physical, mechanical, and/or
electrical characteristics with established standards through examination.
b. Test. To verify
serviceability by measuring the mechanical or electrical characteristics of an
item and comparing those characteristics with prescribed standards.
c. Service. Operations
required periodically to keep an item in proper operating condition, i.e., to
clean (includes decontaminate, when required), to preserve, to drain, to paint,
or to replenish fuel, lubricants, chemical fluids, or gases.
d. Adjust. To maintain,
within prescribed limits, by bringing into proper or exact position, or by
setting the operating characteristics to specified parameters.
e. Aline. To adjust
specified variable elements of an item to bring about optimum or desired
performance.
f. Calibrate. To determine
and cause corrections to be made or to be adjusted on instruments or test,
measuring, and diagnostic equipments used in precision measurement.
Consists of comparisons of two instruments, one of which is a certified
standard of known accuracy, to detect and adjust any discrepancy in the accuracy
of the instrument being compared.
g. Install. The act of
emplacing, seating, or fixing into position an item, part, or module (component
or assembly) in a manner to allow the proper functioning of an equipment or
system.
h. Replace. The act of
substituting a serviceable like type part, subassembly, or module (component or
assembly) for an unserviceable counterpart.
i. Repair. The application
of maintenance services 2
or other maintenance
actions 3 to
restore serviceability to an item by correcting specific damage, fault,
malfunction, or failure in a part, subassembly,
module (component or assembly), end item, or system.
1
Exception is authorized for
ammunition MAC to permit the redesignation/redefinition of maintenance function
headings to more adequately identify ammunition maintenance functions. The
heading designations and definitions will be included in the appropriate
technical manual for each category of ammunition. 2
Services - inspect, test,
service, adjust, aline, calibrate, or replace. 3
Actions - welding, grinding,
riveting, straightening, facing, remachining, or resurfacing.
C-1
TM 9-6920-363-12&P
j. Overhaul. That
maintenance effort (service/action) necessary to restore an item to a completely
serviceable/operational condition as prescribed by maintenance standards in
appropriate technical publications (i.e., DMWR). Overhaul is normally the
highest degree of maintenance performed by the Army. Overhaul does not normally
return an item to like new condition.
k. Rebuild. Consists of
these services/actions necessary for the restoration of unserviceable equipment
to a like new condition in accordance with original manufacturing standards.
Rebuild is the highest degree of materiel maintenance applied to Army equipment.
The rebuild operation includes the act of returning to zero those age
measurements (hours/miles, etc.) considered in classifying Army
equipments/components.
C-3. EXPLANATION OF
COLUMNS IN THE MAC,
Section II.
a. Column 1, Group Number.
Column 1 lists functional group code numbers, the purpose ,of which is to
identify components, assemblies, subassemblies, and modules with the next higher
assembly.
b. Column 2,
Component/Assembly. Column 2 contains the names of components, assemblies,
subassemblies, and modules for which maintenance is authorized.
c. Column 3, Maintenance
Functions. Column 3 lists the functions to be performed on the item listed in
Column 2. (For detailed explanation of these functions, see paragraph C-2.)
d. Column 4, Maintenance
Category. Column 4 specifies, by the listing of a work time figure in the
appropriate subcolumn(s), the category of maintenance authorized to perform the
function listed in Column 3. This figure represents the active time required to
perform that maintenance function at the indicated category of maintenance. If
the number of complexity of the tasks within the listed maintenance function
vary at different maintenance categories, appropriate work time figures will be
shown for each category.
The work time figure
represents the average time required to restore an item (assembly, subassembly,
component, module, end item, or system) to a serviceable condition under typical
field operating conditions. This time includes preparation time, troubleshooting
time, and quality assurance/quality control time in addition to the time
required to perform the specific tasks identified for the maintenance functions
authorized in the maintenance allocation chart. The symbol designations for the
various maintenance categories are as follows:
C..........................................................
Operator or crew.
O
........................................Organizational maintenance.
F.........................................
Direct support maintenance.
H......................................
General support maintenance.
D......................................................
Depot maintenance.
e. Column 5, Tools and
Equipment. Column 5 specifies, by code, those common tool sets (not individual
tools) and special tools, TMDE, and support equipment required to perform the
designated function.
f. Column 6, Remarks. This
column shall, when applicable, contain a letter code, in alphabetic order, which
shall be keyed to the remarks contained in Section IV.
C-4. EXPLANATION OF
COLUMNS IN TOOL AND
TEST EQUIPMENT
REQUIREMENTS, Section III.
a. Column 1, Reference Code.
The tool and test equipment reference code correlates with a code used in the
MAC, Section II, Column 5.
b. Column 2, Maintenance
Category. The lowest category of maintenance authorized to use the tool or test
equipment.
c. Column 3, Nomenclature.
Name or identification of the tool or test equipment.
d. Column 4, National Stock
Number. The National stock number of the tools or test equipment.
e. Column 5, Tool Part
Number. The manufacturer’s part number.
C-5. EXPLANATION OF
COLUMNS IN REMARKS,
SECTION IV.
a. Column 1, Reference Code.
The code recorded in column 6, Section II.
b. Column 2, Remarks. This
column lists information pertinent to the maintenance function being performed
as indicated in the MAC, Section II.
C-2
TM 9-6920-363-12&P
Section II. MAINTENANCE
ALLOCATION CHART
Section III. TOOLS AND
EQUIPMENT REQUIREMENTS
(1) (2) (3) (4) (5)
REFERENCE MAINTENANCE
NATIONAL TOOL PART
CODE LEVEL NOMENCLATURE
STOCK NUMBER NUMBER
1 0 Tool Kit, Small Arms
4933-00-357-7770 SC5180-95-CL-A07
Repairman
Section IV. REMARKS
REFERENCE CODE REMARKS
None
Change 2 C-3 (C-4 Blank)
TM 9-6920-363-12&P
APPENDIX D
OPERATOR AND
ORGANIZATIONAL MAINTENANCE REPAIR PARTS
AND SPECIAL TOOLS LIST
Section I. INTRODUCTION
D-1. SCOPE.
This manual lists spares and repair parts; special tools; special test,
measurement, and diagnostic equipment (TMDE), and other special support
equipment required for performance of operator and organizational maintenance of
the conversion kit. (Caliber .22 rimfire adapter) for 5.56-mm M16 and M16A1
rifle. It authorizes the requisitioning and issue of spares and
repair parts as indicated by the source and maintenance codes.
D-2. GENERAL.
This Repair Parts and Special Tools
List is divided into the
following sections:
a. Section II. Repair Parts List. A list of spares and repair parts authorized for use in the performance of maintenance. The list also includes parts which must be removed for replacement of the authorized par