The Faxon Firearms Duty Series 15A 5.56 NATO 16" Government/SOCOM Nitrided Rifle barrel delivers the balanced performance shooters need for duty, competition, and tactical applications. Built on Faxon's proven Gov't/SOCOM profile—a smart hybrid between standard M4 and heavy-profile geometry—this 5.56 barrel stays slim behind the gas block for quick handling while thickening forward for the rigidity that counts when you're chasing accuracy. It's the kind of design that works whether you're running a patrol rifle, a 3-gun rig, or a home-defense upper.

Machined from 4150 CMV carbon steel and QPQ nitride coated inside and out, this barrel is built to last. The nitride finish handles corrosion and abuse without the weight penalty of heavier coatings, and the material choice balances toughness with the kind of accuracy stability you expect from a quality AR barrel. Every barrel is stress-relieved to eliminate internal tensions, air-gauge tested for consistency, and individually headspace-checked with precision custom hardened gauges—then inspected again at every manufacturing step before it ships.

The 1-8" twist rate handles everything from lightweight practice rounds to heavier tactical loads, and button rifling keeps costs reasonable without sacrificing consistency. The 11-degree target crown protects accuracy, while M4-type feed ramps ensure reliable chambering across all ammunition types. At 16 inches, this is a versatile length that works for intermediate range work, home defense, and duty carry—short enough to be handy in close quarters, long enough to wring out velocity and sight radius from your 5.56.

The Faxon Firearms Duty Series 15A 5.56 NATO 16" Government/SOCOM Nitrided Rifle barrel delivers the balanced performance shooters need for duty, competition, and tactical applications. Built on Faxon's proven Gov't/SOCOM profile—a smart hybrid between standard M4 and heavy-profile geometry—this 5.56 barrel stays slim behind the gas block for quick handling while thickening forward for the rigidity that counts when you're chasing accuracy. It's the kind of design that works whether you're running a patrol rifle, a 3-gun rig, or a home-defense upper.

Machined from 4150 CMV carbon steel and QPQ nitride coated inside and out, this barrel is built to last. The nitride finish handles corrosion and abuse without the weight penalty of heavier coatings, and the material choice balances toughness with the kind of accuracy stability you expect from a quality AR barrel. Every barrel is stress-relieved to eliminate internal tensions, air-gauge tested for consistency, and individually headspace-checked with precision custom hardened gauges—then inspected again at every manufacturing step before it ships.

The 1-8" twist rate handles everything from lightweight practice rounds to heavier tactical loads, and button rifling keeps costs reasonable without sacrificing consistency. The 11-degree target crown protects accuracy, while M4-type feed ramps ensure reliable chambering across all ammunition types. At 16 inches, this is a versatile length that works for intermediate range work, home defense, and duty carry—short enough to be handy in close quarters, long enough to wring out velocity and sight radius from your 5.56.