BattleHawk Armory AR-15 6.5 Grendel / 6mm ARC / .22 ARC Black Nitride Complete Bolt Carrier Group - BCG Designed to meet the demands of modern long-range and high-pressure AR platforms, the BattleHawk Armory Black Nitride BCG is purpose-built for rifles chambered in 6.5 Grendel, 6mm ARC, and .22 ARC. Whether you're pushing for precision at distance or hunting in rugged conditions, this complete bolt carrier group offers the durability, performance, and finish needed to go the distance. Precision-machined from top-grade materials and treated with a Black Nitride finish, this BCG offers reduced friction, enhanced corrosion resistance, and easier maintenance. The enhanced geometry and military-grade testing standards ensure flawless function in high-performance rifle systems. Carrier Group: Constructed from case-hardened 8620 steel Black Nitride finish for superior wear resistance and smooth cycling Gas key made from 4130 steel, secured with Grade 8 hardware and properly staked into a milled valley Hardened 4340 steel cam pin 8740 steel Mil-Spec firing pin, hard chrome coated and centerless ground Bolt Assembly: Bolt made from precision CNC-ground 9310 case-hardened steel Finished in Black Nitride, shot peened, and heat treated 4340 extractor with manganese phosphate coating, Mil-Spec extractor spring & O-ring combo Fully MPI (Magnetic Particle Inspected) and HPT (High Pressure Tested) Fits: AR-15/M4-style rifles chambered in 6.5 Grendel, 6mm ARC, and .22 ARC Made in the USA. Now available at BattleHawk Armory-precision-built for today's long-range shooters. Let me know if you'd like a lighter tone for general consumers or a more technical tone for DMR-focused builds.