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850-579-1208


16" 300 BLK Upper


Starting at: $875.00

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Please Choose:

Thread Muzzle  

 
 


Finish Type (SS Barrels Only)  

 
 
 


Note: Adding fluting will increase your lead time

Fluting  

 
 
 


Are you looking for something with a little more kick than the .223? Well the Compass Lake Engineering 300 AAC Blackout upper might be what you're needing.

We start with a Douglas blank that we machine and chamber to our specifications.

Next we attach the barrel to a mil-spec upper receiver and install the pistol length gas system with low profile gas block.

Finally we mount the YHM Diamond handguard to give you the finished product.

The 300 Blackout barrel is 1" behind the gas block, .750 at the gas block and .740 in front of the gas block. This upper comes standard with M4 feed ramps, a 5/8-24 threaded muzzle and an adjustable gas block.


  • Shipping Weight: 21lbs
  • Manufactured by: Compass Lake Engineering


This product was added to our catalog on Monday 27 February, 2017.