The Faxon Firearms Gunner Duty Series AR15 Barrel in 5.56x45mm NATO delivers purpose-built reliability for tactical, duty, and precision-focused builds with an 11.5" nitride-coated CMV barrel that features a precise 1:8 twist and a mid-length gas system for smoother recoil and consistent performance. Crafted for AR-15 platforms, this 11.5" barrel blends compact maneuverability with rugged durability, ensuring enduring accuracy and stability in dynamic environments. The nitride finish offers enhanced wear resistance and corrosion protection, making it ideal for demanding field use, patrol rifles, or training rifles that require repeatable performance under diverse conditions. With its 1:8 twist rate, it stabilizes a wide range of 5.5645mm NATO projectiles, supporting reliable feeding and shot execution from close quarters to longer sight runs. Designed to pair seamlessly with standard AR-15 components, the Gunner Duty Series barrel enables quick installation and predictable lockup, while delivering tight groups and consistent muzzle rise control. Whether upgrading an existing rifle or assembling a duty-ready platform, this Faxon Firearms barrel blends precision engineering, hardened CMV steel, and practical mid-length ergonomics to meet the demands of serious shooters.