Precision manufactured and individually inspected to ensure high-level performance – Strong easy-to-clean black nitride finish – Compatible with lighter buffers to allow faster follow-up shots – 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 – Lightweight only 8.9 oz.
