Battle Arms AR-15 Bolt Carrier Group 5.56x45mm NATO Nitride Black

This Battle Arms Development Standard Bolt Carrier Group is Black Nitride finished with an ultra-hard, corrosion resistant top surface layer for wear resistance and minimal need for lubricants. Machined from the very best materials for reliable use and longevity. The laser engraved BAD Inc logo let's you know this BCG isn't standard, it sets the standard. Features Bolt Carrier: 8620 Steel Case Hardened, Machined from BilletFiring Pin: 8740 Steel, Center-less Ground, Hard ChromedGas Key: 4130 Ste