223/556NATO, Black Nitride Finish
- Case Hardened 9310 Steel Bolt
- Case Hardened 8620 Steel Carrier
- Black Nitride Finish
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.