AR15 7.62x39 BCG- Left Hand

AR-15 bolt carrier group for left-handed AR-15 uppers. Left Hand model designed to work with 7.62x39, 9x39, or similar, intended to run both steel and brass cased ammo. Machined in house using high quality steels and components. - Carrier: machined from aircraft/bearing quality 8620 steel, heat treated, ground to perfection, and nitride treated by HM BlackNitride - Profile: M16 full auto profile carrier with correct sear trip placement - Bolt: machined from aircraft/bearing quality 9310 steel, heat treated, precision ground, nitride finished, standard .125 bolt face depth, MPI Tested - Firing pin: mil-spec 8740 steel, precision ground, heat treated, chrome plated - Cam Pin: Nitride treated - Extractor: enhanced billet extractor - phosphate coated - Ejector: S7 tool steel ejector and extractor retaining pin - Gas Key: 4130 steel, nitride treated, precision staked using our hydraulic staking machine For 7.62x39, 9x39, or similar, designed to run both steel and brass cased ammo