Aero Precision AR-15 5.56 NATO Bolt Carrier Group, Black Nitride - APRH100615

Complete bolt carrier group for AR-15 platforms chambered in 5.56 NATO, machined from 8620 steel carrier and 9310 steel bolt with black nitride finish. Features M16-cut carrier with forward assist serrations, properly staked gas key, shot peening, HPT testing, and MPI marking. Black nitride coating provides advanced lower friction characteristics while minimizing lubrication and cleaning requirements.