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.