DealMilspec Carpenter No. 158 steel HPT Bolt MPI Bolt Shot Peened Bolt Chrome Lined Carrier (AUTO) & Gas Key Gas Key Hardened to USGI Specifications Grade 8 Hardened Fasteners Key Staked Per Mil-Spec Tool Steel Extractor BCM Extractor Spring Black Extractor Insert Mil-Spec Crane O-Ring from Bravo Company USA (Product BCM-BOLT-CARRIER-GROUP-AUTO-MP) |