• High-strength and easy-to-clean black nitride finish
• Individually MPI tested
• Bolt: 9310 MPI tested
• Carrier: 8620 tool steel heat treated and case hardened
• Gas key: tool steel - grade 8 hardened fasteners and staked properly
• Cam pin: 4140 steel
• Extractor: tool steel – shot peened

Rise Armament Bolt Carrier Group, .223/5.56, Black Finish Ra-1011-blk

Product Type: Bolt Carrier Group
Finish/Color: Black