PSA Premium 5.56 Nickel Boron BCG w. Carpenter 158 Bolt

PRODUCT DETAILS

• Nickel Boron Finish
• Milspec Carpenter No. 158® steel bolt
• Shot Peened Bolt
• Mag particle inspected
• High Pressure Tested
• 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
  
  

FEATURES

• 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.