Rise Armament's advanced bolt-carrier group (BCG) is manufactured with precision and individually inspected to ensure high-level performance.
- High-strength and easy-to-clean 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