BATTLEARMS AR15/M16 Full Auto BCG Bolt Carrier Group

Description

• Laser Engraved BAD INC Logo
• Bolt Carrier: 8620 Steel Case Hardened, Machined from Billet
• Firing Pin: 17-4 H-900 Steel, Center-less Ground
• Gas Key: 4140 Steel with Grade 8 Screws, Properly Staked, Machined from Billet
• Cam Pin: 4140 Hardened Steel
• Finish: Black Nitride finished with an ultra-hard, corrosion-resistant top surface layer for wear resistance and minimal need for lubricants.
• Bolt: 9130 steel Shot Peened, Mil-Spec Dimensions, CNC Ground After Heat Treat, Black Nitride Finished MPI/HPT
• Extractor: 4140 Billet, Manganese Phosphate Finished for Positive Grip
• Enhanced: The new bolt carrier geometry was designed to reduce carrier tilt and the key bearing surfaces are relocated to increase reliability.