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Diamondback Barrels 5.56 NATO AR-15 Bolt Carrier Group (BCG) has been discontinued by Diamondback Barrels and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Parts, Bolt Carrier Groups yourself to try and find the perfect replacement for you!
Diamondback Firearms 5.56 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.