The Faxon Duty Series 16" 400 Legend AR Barrel brings Faxon’s proven Gunner profile to the next evolution of straight-wall hunting cartridges. The .400 Legend offers excellent energy transfer and reduced recoil—perfect for deer hunting in straight-wall states.

The Gunner profile combines the durability of the Gov’t profile with the weight savings of a Pencil barrel, maintaining rifle balance and reducing fatigue for long sessions in the field or at the range.

Each barrel is fully stress relieved, air-gauge tested, and 11° target crowned for superb accuracy and durability. Made from 4150 CMV steel and Nitride treated inside and out, these barrels are built to perform for a lifetime.

Key Benefits

• Optimized for .400 Legend: Engineered for straight-wall performance and hunting legality.
• Gunner Profile: Combines Gov’t barrel strength with Pencil weight savings.
• 4150 CMV Steel: Heat-treated Mil-Spec barrel steel for long service life.
• Nitride Finish: Corrosion and wear resistance inside and out.
• Carbine-Length Gas System: Ensures reliable function and smooth cycling.
• Big Bore Barrel Extension: Optimized for large-diameter straight-wall cartridges.
• Precision QC: Stress relieved, air-gauge tested, and headspace verified with PTG gauges.

Specifications

Frequently Asked Questions

Overview: 16" Duty Series Gunner Profile .400 Legend Barrel

The Faxon Duty Series 16" 400 Legend Gunner Barrel is designed to deliver precision, balance, and durability for hunters and marksmen. Built from 4150 CMV steel and Nitride treated inside and out, this barrel ensures corrosion resistance and extended service life.

Featuring Faxon’s signature Gunner profile and Big Bore barrel extension, it delivers smooth cycling, consistent accuracy, and lightweight handling — a reliable choice for any 400 Legend AR build.