Tiger Rock AR 7.62×39 Bolt Carrier Group (BCG)

Bolt Carrier Group BCG Assemblies feature full-auto capability a shot peened MPI Bolt 8620 Gas Carrier and Gas Key fastened with hardened Grade 8 fasteners. The ultra-hard and corrosion-resistant Black Nitride ensures this BCG continued reliability and precision. Specifications for Tiger Rock AR 7.62×39 Bolt Carrier Group (BCG): Manufacturer: Tiger Rock Color: Black Finish: Ultra Hard Black Nitride Fabric/Material: Heat Treated Steel Cartridge: 7.62x39mm Gun Make: AR Platform Condition: New Package Contents: Tiger Rock AR 7.62×39 Bolt Carrier Group