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Faxon Firearms Big Gunner .308 WIN, Rifle-Length, 4150 QPQ Nitride Barrel - 20"


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Faxon Firearms Big Gunner .308 WIN, Rifle-Length, 4150 QPQ Nitride Barrel - 20"


Faxon's .308 continue their fantastic barrel-making with a bit more punch. They've updated their previous Medium-Taper profile taking into account customer feedback, optimizing the barrel to meet the Gunner brand's high standards. 


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 they use 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 CMV
  • 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
More Information
SKU 10A810R20NGQ
Product Type Barrel
Manufacturer Faxon Firearms
Gas Block Diameter .750"
Thread Pitch 5/8x24
Gas Length Rifle
Finish Nitride
Barrel Length 20"
Caliber .308 Win

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