Cryptic AR15/M16/M4 6.5mm Creedmoor Bolt Carrier Group Chrome Mystic Silver

Cryptic AR15/M16/M4 6.5mm Creedmoor Bolt Carrier Group Chrome finish with chrome lined interior. BCG machined from Mil-Spec 8620 aircraft quality steel with a shrouded firing pin and Mil-Spec chrome lined interior. Gas key is secured to the carrier with Grade 8 fasteners and properly staked per Mil-Spec. Bolt assembly CNC machined from Mil-Spec Carpenter No. 158 steel and shot peened for increased strength per Mil-Spec; includes tool steel extractor with spring and viton O-ring; firing pin chromed; finished with firing pin retaining pin and cam pin. HPT (High Pressure Batch Tested) and MPI (Magnetic Particle Inspected). Specifications: Manufacturer Cryptic; Finish Chrome; Fabric/Material: 8620 Aircraft Quality Steel; Caliber: 6.5mm Creedmoor; Gun Make: AR Platform; Gun Model: M16, M4, AR-15; Weight: 17.8 oz. Package Contents: Cryptic AR15/M16/M4 6.5mm Creedmoor Bolt Carrier Group.