BHA Precision Complete AR-15 5.56/300 Black Nitride Bolt Carrier Group - BCG

BHA Precision Complete AR-15 Bolt Carrier Group BCG\n\nOverview: A Mil-Spec–grade bolt carrier group finished in Blacknitride+ by H&M, designed for corrosion resistance and lubricity. Machined and ground for precise exterior and interior dimensions, built to deliver reliable performance over tens of thousands of rounds. Lifetime warranty.\n\nKey Features:\n- M16 style carrier\n- 8620 steel carrier with heat treatment\n- Final grind before plating\n- Blacknitride+ finish by H&M\n- 5.56/.223/.300 Blackout bolt\n- 9310 steel bolt with heat treatment and shot peening; MPI tested; finished with Blacknitride+ by H&M\n- Billet gas key (4130 steel); properly seated with Grade 8 fasteners; staked\n- Cam pin (4140 steel); heat treated; finished with Blacknitride+ by H&M\n- Billet extractor (4140 steel); heat treated, phosphate coated; extractor insert and Viton O-ring included\n- Firing pin (8640 steel); finished with Blacknitride+ by H&M\n- 100% American made; lifetime warranty\n\nCompatibility: 5.56 NATO, .223 Remington, and 300 Blackout rifles.