Battle Arms Development AR15/M16 Full Auto Bolt Carrier Group - Black Nitride

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

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.