Nickel Boron FinishMilspec Carpenter No. 158® steel boltShot Peened BoltMag particle inspectedHigh Pressure TestedGas Key Hardened to USGI SpecificationsGas Key Grade 8 Hardened FastenersGas Key Staked Per Mil-SpecTool Steel ExtractorExtractor SpringExtractor O-ring InsertPSA Logo
Nickel boron coated full-auto profile bolt carrier group.
Milspec Carpenter No. 158® steel boltShot Peened BoltHigh pressure testedMag particle inspectedGas Key Hardened to USGI SpecificationsGas Key Grade 8 Hardened FastenersGas Key Staked Per Mil-SpecTool Steel ExtractorExtractor SpringExtractor O-ring InsertPSA Logo
For packaging considerations, BCG will be packed dry. Nickel Boron's natural surface lubricity is not a substitute for normal rifle lubrication. Please follow all manufacturers recommendations for lubrication. It is possible to discolor the finish with dirty ammo or prolonged use without cleaning.
