CMMG M16 5.56x45mm NATO Steel Bolt Carrier Group - Black

The CMMG M16 Bolt Carrier Group is a complete, standard-size replacement and build component for the AR-15 platform. It uses an M16 full-auto-profile carrier and is supplied as one complete bolt carrier group.

CMMG builds the bolt from 9310 steel with a phosphate finish. The 8620 steel carrier is chrome-lined and phosphate-finished, while the extractor is made from 4140 steel with a phosphate finish. The assembly has a black exterior.

This bolt carrier group is compatible with 5.56x45mm NATO, .223 Remington, and .300 AAC Blackout chamberings. It is a New CMMG component covered by the CMMG Lifetime Quality Guarantee.