Cryptic 6.5mm Grendel/7.62x39mm Bolt Carrier Group (BCG) - Complete

Cryptic 6.5mm Grendel/7.62x39mm Bolt Carrier Group Complete. Coated Bolt Carrier Group (full auto version) for AR15, M16, or M4 machined from Mil-Spec 8620 aircraft quality steel with shrouded firing pin and Mil-Spec chrome-lined interior. BCG includes chrome-lined and heat treated gas key. Gas key is secured to carrier with Grade 8 fasteners and properly staked per Mil-Specs. The bolt assembly is CNC machined from Mil-Spec Carpenter No. 158 steel and shot peened for increased strength per Mil-Spec. HPT (High Pressure Batch Tested) and MPI (Magnetic Particle Inspected). Caliber: 6.5mm Grendel, 7.62x39mm. Gun Make: AR Platform. Gun Model: M16, M4, AR-15. Hand: Ambidextrous. Weight: 11.55 oz. Included Accessories: Gas Key; Bolt w/ Spring and Ejector; Extractor w/ Spring and Viton O-ring; Firing Pin; Cam Pin. Compatible with AR-15, M4, M16.