CHAMBERED M16 .223/5.56 BN BCG C-158 BOLT
- 0.0001+/- TOLERANCE
- 100% CUSTOMER SATISFACTION
- 99.9% REPEATABILITY
- 100% AMERICAN MATERIAL
Bolt Lugs are machined with the proper radius as per true mil-spec tolerances. Independent high-pressure white proof testing exceeded over 90,000 PSI without failure. Outer diameter machined to all critical surfaces within +/- .0005 inches. Rounded cam pin rides in a fully chamfered cam path. Gas key with rounded leading edges insures positive functioning in all makes and grades of uppers and buffer tube combinations. Properly staked and torqued grade 8 hex screws as per the true mil-spec. Carrier body OD and ID are hard turned after heat treat to +/- .0005 inches.