DESCRIPTION

Nickel boron coated full-auto profile bolt carrier group.

• Milspec Carpenter No. 158® steel bolt
• Shot Peened Bolt
• High pressure tested
• Mag particle inspected
• Gas Key Hardened to USGI Specifications
• Gas Key Grade 8 Hardened Fasteners
• Gas Key Staked Per Mil-Spec
• Tool Steel Extractor
• Extractor Spring
• Extractor O-ring Insert
• PSA 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.