Battle Arms Development BAD-BC

Laser Engraved BAD INC LogoBolt Carrier: 8620 Steel Case Hardened, Machined from BilletFiring Pin: 17-4 H-900 Steel, Center-less GroundGas Key: 4140 Steel with Grade 8 Screws, Properly Staked, Machined from BilletCam Pin: 4140 Hardened SteelFinish: 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 FinishedExtractor: 4140 Billet, Manganese Phosphate Finished for Positive GripEnhanced: The new bolt carrier geometry was designed to reduce carrier tilt and the key bearing surfaces are relocated to increase reliability.