The RISE Armament advanced bolt-carrier group (BCG) is manufactured with extreme precision and individually inspected to ensure high-level performance. Rise Arms is known in the firearm and rifle industry as one of the premier manufacturers. Their quality is built in every aftermarket rifle component they design and that’s no different from their AR-15 Bolt Carrier Group.
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