Diamondback Barrels 5.56 NATO AR-15 Bolt Carrier Group BCG Black Nitride

Diamondback Barrels 5.56 NATO AR-15 Bolt Carrier Group BCG Black Nitride. 56 Bolt Carrier Group BCG is coated in a black nitride finish to prevent carbon build up and ensure that your rifle keeps functioning. You can be confident that every part of this Bolt Carrier Group BCG is machined installed and tested to a high standard of quality. Package Contents: Diamondback Barrels 5.56 NATO AR-15 Bolt Carrier Group Diamondback Barrels DB15-BCGS: 5.56 NATO AR-15 Bolt Carrier Group Black Nitride