Radian Weapons R0081 Enhanced BCG 223/5.56 NATO AR-15/M16 Case Hardened 9310 Steel Bolt Case Hardened 8620 Steel Carrier Black Nitride Finish 4130 Steel Gas Key

The Enhanced Bolt Carrier Group for AR15/M16 platform weapons was designed to minimize carrier tilt and reduce friction inside the upper receiver by relocating key bearing surfaces. All materials tolerances and coatings meet or exceed milspec standards for performance reliability and durability.