Product Description
The Faxon Firearms Duty Series Gunner barrel is built for AR-15 platforms chambered in 400 Legend (SAAMI), delivering a balanced blend of strength and handling for hunting and range use. Its Gunner profile merges Government-profile durability with Pencil-profile weight savings to help keep the rifle lively and reduce fatigue during extended sessions. Manufactured from 4150 CMV steel with a salt bath nitride finish inside and out, this 16-inch barrel is engineered for long-term corrosion and wear resistance, with a carbine-length gas system for reliable cycling.
Designed around straight-wall performance, it features a Big Bore barrel extension and an 11 degree target crown. Each barrel is stress relieved, air-gauge tested, and headspace verified using PTG gauges to support consistent accuracy and dependable function.
Product Highlights
- Gunner profile balances durability and reduced front-end weight for better maneuverability
- 4150 CMV steel construction with salt bath nitride finish for corrosion and wear resistance
- Carbine-length gas system tuned for reliable cycling in 400 Legend AR-15 builds
- Big Bore barrel extension optimized for large-diameter straight-wall cartridges
- Precision quality control: stress relieved, air-gauge tested, and headspace verified with PTG gauges
Specs
- Brand: Faxon Firearms
- Manufacturer Part Number: 15A4L16C16NGQ
- UPC: 816341028500
- Cartridge: 400 Legend (SAAMI)
- Barrel Length: 16 in
- Twist Rate: 1:16 right-hand
- Profile: Gunner
- Gas System Length: Carbine-length
- Material: 4150 CMV steel
- Rifling Method: Button rifled
- Finish: Salt bath nitride (inside and out)
- Muzzle Threads: 11/16x24 TPI
- Gas Block Diameter: 0.875 in
- Gas Block Journal Length: 1.9 in
- Barrel Extension: Big Bore
- Crown: 11 degree target crown
- Weight: 2.00 lb
- Country of Manufacture: United States
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