Faxon Firearms Duty Series AR15 9mm Barrel 8.5in 1:10 Twist Blowback Nitride

The Faxon Firearms Duty Series AR15 Barrel 9mm 1:10 Twist 4150 Nitride - 8.5" light tapered profile delivers factory-tested reliability for modern pistol-caliber carbine builds, designed for blowback operation and known for consistent performance under field and range conditions. Crafted from certified 4150 Mil-Spec steel and finished in QPQ nitride for durability, this barrel undergoes a meticulous testing sequence at every stage and is precision inspected for headspace with hardened gauges, en