Faxon 18" Big Gunner Profile AR10 Barrel, 308 Win, Nitrided

Faxon 18" Big Gunner Profile AR10 Barrel, 308 Win, Nitrided

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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 CMV
  • Barrel Type: Button Rifled 
  • Barrel Caliber: .308 WIN
  • Barrel Twist: 1:10
  • Barrel Length: 18”
  • Barrel Profile: Big Gunner
  • Barrel Gas System: Rifle
  • Inside Finish:  Salt Bath Nitride         
  • Outside Finish: Salt Bath Nitride     
  • Muzzle Thread: 5/8-24
  • Gas Block Diameter: .750" 
  • Gas Block Journal Length: 1.9"
  • Barrel Extension: LR-308 (DPMS Compatible)
  • Weight: 2.13 lbs
  • Magnetic Particle Inspected
  • 11-degree Target Crown

Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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  • .308 AR Accuracy Without the Weight Penalty

    Posted by Joel on Mar 8th 2018

    I was shocked at how accurate this barrel is. During my break in shooting, I put 40 rounds through the barrel offhand and could not miss the same spot. I ended up with an AR10 that weights 10 pounds (with scope) and easily out shoots everything else I own. I bought a second barrel to build a duplicate gun for my brother because it shoots so well. The fit and finish are amazing, the chamber passed when I checked my bolt with a Go, No-go guage set, the shipping was fast. You will not work with a better company when building your AR.

  • Light weight tack driver!

    Posted by JOSHUA A PLATT on Sep 28th 2017

    I was looking to replace the barrel from another manufacturer that was heavy profiled with mid gas bust was still printing 2 or more inches at 100yds with match ammo on my Ar10 build. Wasn't happy with accuracy or weight so I switched brands and went with this faxon 18in lighter profile barrel and loved it! Ive only taken it out once so far, did some fuction checks, zeroed and printed a couple 5rnd groups but my groups were only 1/2in at 100yds! It also ran 100% and with the rifle length gas the recoil was almost not noticable and made for soft shooting. This barrel increased the accuracy of my rifle and cut almost a pound off the overall weight. I can't be happier this was the perfect barrel for my ar10 build. Highly recommend for precision or hunting rifle build!

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