Faxon Firearms Gunner Duty Series 5.56 NATO 13.9" Black Nitride 4150 CMV

Faxon Duty Series Gunner Profile — 13.9" Mid-Length 5.56 NATO (1:8 Twist) Balanced, pin-weld-ready barrel optimized for accuracy, control, and long-term durability. The Faxon Duty Series 13.9" Gunner Profile 5.56 NATO barrel represents the perfect balance of weight, performance, and reliability for modern AR-15 builds. By blending the strength of the Government profile with the agility of the Pencil contour, the Gunner design keeps the rifle fast and controllable while maintaining rigidity where it matters.