Faxon Duty Series 16", Gunner Profile, 350 Legend, Carbine Gas, 4150, Nitride AR-15 Barrel - Seasonal Release

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(3 reviews)
Current Stock:

Faxon Firearms is expanding the ever-popular Gunner line of barrels to include the new 350 Legend straight wall cartridge. The Gunner profile is a blend of two of the best performing profiles of all time, Gov't and Pencil. Faxon's Gunner profile combines the durability of the Gov't profile with the weight savings and maneuverability of the Pencil profile. The Gunner profile brings the balance of the rifle back towards the shooter's body, limiting fatigue, and allowing for shooting, training, or hunting all day long.

Faxon Firearms barrels are the pinnacle of value. Manufactured in-house in Cincinnati, Ohio, Faxon barrels are fully stress relieved, air-gauge tested, and 11 degree target crowned to ensure superior accuracy. Quality is imbued into our barrels from the beginning of the manufacturing process.. We start with the best materials, either certified 4150 Mil-Spec steel or 416-R Stainless. From there, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace with precision PTG gauges.

  • Barrel Material: 4150 CMV
  • Barrel Type: Button Rifled 
  • Barrel Caliber: 350 Legend SAAMI
  • Barrel Twist: 1:16
  • Barrel Length: 16”
  • Barrel Profile:  Gunner
  • Barrel Gas System: Carbine
  • Inside Finish: Nitride
  • Outside Finish: Nitride
  • Muzzle Thread: 1/2x28
  • Gas Block Diameter: .750" 
  • Gas Block Journal Length: 1.9"
  • Barrel Extension: Big Bore 
  • Weight:  1.36  lbs
  • Magnetic Particle Inspected
  • 11-degree Target Crown
Barrel Material:
Barrel Type:
Button Rifled
Barrel Caliber:
350 Legend
Barrel Length:
Barrel Twist:
Barrel Profile:
Barrel Gas System:
Inside Finish:
Salt Bath Nitride
Outside Finish:
Salt Bath Nitride
Muzzle Thread:
Gas Block Diameter:
Gas Block Journal Length:
Barrel Extension:
Big Bore
Barrel Weight:
1.36 lbs
Crown Type:
Recessed 11-degree Target Crown


  • 5
    A PLUS

    Posted by Ben Price on Mar 25th 2023

    No surprise very accurate. Light and well made!

  • 5
    16" gunner 350 legend barrel

    Posted by James Ladner on Nov 28th 2022

    Fit and finish perfect, accurate as expected.

  • 5
    Pefect 350 Legend barrel

    Posted by Black Swamp Firearms on Oct 19th 2021

    We've used Faxon barrels for our custom builds for the past six years. These 350 Legend barrels have achieved 1/2" groups (or better) for us at 100 yards. Amazing barrels. Many satisfied customers.