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16" 300 BLK Upper

Starting at: $875.00

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Thread Muzzle  


Finish Type (SS Barrels Only)  


Note: Adding fluting will increase your lead time



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.