Faxon 20″, Big Gunner, .308 WIN, Rifle-Length, 4150, Nitride

(5 customer reviews)

$259.00 $246.05

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SKU: 10A810R20NGQ Categories: , ,


Faxon’s .308 continue our fantastic barrel-making with a bit more punch. We’ve updated our 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 our 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 we 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 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

Additional information

Weight 2.5 lbs
Dimensions 20 × 2 × 2 in

5 reviews for Faxon 20″, Big Gunner, .308 WIN, Rifle-Length, 4150, Nitride

  1. John B. (verified owner)

    B King has the best prices on Faxon, Aero, and BA gear. WIll do business again for sure.

  2. land8283 (verified owner)

    Excellent pricing for Faxon barrels! The barrel itself is perfect for building a hunting/stalking AR10 rifle. Lots of weight reduction without reducing accuracy. Just for fun to see how accurate the barrel was we set up steel targets at 875 yards. Once the scope was dialed in, we were ringing steel at distance without issue. Even after multiple strings of fire, the POI shift was minimal enough that we were still hitting the targets. THAT’S a great barrel!!

  3. Chad Anderson (verified owner)

    Great barrel, good pricing.

  4. Jason S. (verified owner)

    Good prices on Faxon barrels from Blake. Installed easily, I’m hoping to give 5 stars after I get it broke in

  5. Jason S. (verified owner)

    Built for a friend, which is a shame. Shot so well I wanted to keep it

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