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Faxon – Barrel – 20″ Big Gunner, .308 Winchester, Rifle-Length, 4150


: $259.00 (you save: $6.01)

Faxon has updated their .308 series barrels previous Medium-Taper profile taking into account customer feedback, optimizing the barrel to meet the Gunner brand’s high standards.

Out of stock

SKU: 10A810R20NGQ Category: Tag:

The .308 Big Gunner profile barrels are the big-brother to their famous 5.56 Gunner barrels. The Big Gunners feature a medium-taper behind the gas block. The gas block journal is set to .750″ for compatibility with most common gas blocks and 1.9″ in length for long blocks or aftermarket piston kits. From the gas block journal forward there is a thinner taper, designed to reduce weight, yet maintain rigidity for high rates of fire and as a suppressor host.

The Gunner barrels are ideal for any competition or duty use. When the seconds count, count on the Gunner profile.


  • Barrel Material: 4150 QPQ
  • Barrel Type: Button Rifled
  • Barrel Caliber: .308 WIN
  • Barrel Twist: 1:10
  • Barrel Length: 20”
  • Barrel Profile: BIG GUNNER
  • Barrel Gas System: Rifle
  • Inside Finish: Salt Bath Nitride
  • Outside Finish: Salt Bath Nitride
  • Muzzle Thread: 5/8-24 TPI
  • Gas Block Diameter: .750″
  • Gas Block Journal Length: 1.9″
  • Barrel Extension: LR-308 (DPMS Compatible)
  • Weight: 2.24 lbs
  • Magnetic Particle Inspected
  • 11-degree Target Crown
Weight19.84 oz
Dimensions20 × 2 × 2 in
barrel length

20 inch

barrel twist



.308 WIN

gas length



Black Nitride


Black Nitride


Faxon Firearms


4150 CMV Steel


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