20", Heavy Fluted, .308 WIN, Rifle-Length, 416-R Stainless Steel QPQ

20", Heavy Fluted, .308 WIN, Rifle-Length, 416-R Stainless Steel QPQ

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Faxon's .308 continue our fantastic barrel-making with a bit more punch. 

Faxon Firearms barrels are the pinnacle of value. Manufactured 100% in-house from cradle-to-grave, these 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 start. 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 by precision custom hardened gauges. 

Faxon manufactures all our barrels in Cincinnati, Ohio under our ISO:9001 and AS:9100  quality certifications. 

  • Barrel Material: 416-R
  • Barrel Type: Button Rifled 
  • Barrel Caliber: .308 WIN
  • Barrel Twist: 1:10
  • Barrel Length: 20
  • Barrel Profile: Heavy Fluted
  • Barrel Gas System: Rifle (1.1" Journal)
  • Inside Finish: Nitride QPQ         
  • Outside Finish: Nitride QPQ
  • Muzzle Thread: 5/8-24 TPI
  • Gas Block Diameter: .750" 
  • Gas Port Diameter: .093
  • Gas Block Journal Length: 1.1"
  • Barrel Extension: DPMS LR-308 Compatible
  • Barrel Weight: 2.46 Lbs
  • Magnetic Particle Inspected!
  • 11-degree Target Crown

*Note - Faxon Firearms barrels are chambered to SAAMI specification .308 Winchester at a nominal headspace depth (passing "Go" and failing "No-Go"). This ensures maximum safety and accuracy.

7.62x51 NATO is not the same round as .308 Winchester, though it will fit within chamber. 7.62x51 technically requires deeper headspacing to meet the military specification and is known to function in Faxon .308 WIN barrels under most circumstances. However, due to the variation of components in the .308 AR world and variations between loadings, Faxon cannot guarantee or warrant function with 7.62x51, especially with bolts with tight ("match") .308  WIN headspacing. 

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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11 Reviews Hide Reviews Show Reviews

  • beautiful

    Posted by Unknown on Jan 10th 2017

    Beautiful but haven't shot it yet.

  • Shoulda Got this one first

    Posted by Alan Brown on Nov 7th 2016

    I initially purchased a Rainier Arms barrel - sent it back because it was junk and the second one still didn't shoot any better than 3" groups at 100 yards. Why didn't I get the Faxon to start with? I dunno! But I have this Faxon 20" heavy fluted barrel in 308 Winchester now and it is AWESOME in EVERY respect!!!! Every detail in the machining fit and finish is as good as one could ask for! I will never buy anything but Faxon from now on! I was hoping I could put a picture here of my target - It's an AR, so you have to work hard for your accuracy, and I found a recipe that works for this barrel. 3/4" group with four shots at 100 yards. VERY HAPPY!!!! It's on an Aero Precision upper/lower and a Syrac adjustable gas block and Diamondhead T-Brake. It now shoots as good as it looks!

  • Perfection in metal form

    Posted by DSK on Oct 11th 2016

    This barrel is perfect. I did the break in procedure one week, than then about a week later I went back to the range. I did a 20 round mag to sight in my scope at 100 yards. Honestly I thought my scope was off or came loose after the first shot because I didnt see the second hole... or the 3rd. I checked the scope mounting and it was secure. Turns out all 3 went through same hole at 100. My goal is to get out to 600+ and I have no doubt this barrel will do so and accurately. I'm using a KAK double ejector BCJ coupled with a JP muzzle break on a custom AR10 build. Buy this barrel. You will not be disappointed in it or the company. This is my 2nd barrel from Faxxon and not the last

  • Awesome barrel at an awesome price

    Posted by Brennan, Owner, www.firearms4less.com on Oct 6th 2016

    We've been selling many of the Faxon barrels for several months now and have had lots of happy customers with all of them -- 223, 9mm, 300 BLK and of course this heavy fluted 308 barrel. The machining is exceptional. It's obvious that Faxon takes a lot of pride in their barrels.

  • great choice

    Posted by Justin on Apr 11th 2016

    I did a lot of research before settling on this barrel. Theres not a lot of information out there on faxons barrels but I can say from personal expirience that they are of great quality. When it arrived i was impressed with the looks and quality of the barrel. When my build was finally complete, i zeroed at 100 yards using 168 grain federal gold medal match and achieved sub moa. After zeroing i was able to hit 12x12 steel plate multiple times at 600 yards. Very impressed and definitly will use faxon. On later builds

  • Excellent Choice for any 18" Build

    Posted by Thumper on Mar 24th 2016

    Made this purchase on a whim - was ordering some other barrels, needed a Fluted 18" for my .308 AR build, and saw this one sitting there in the catalog. Said "what the heck" and made a great decision totally by chance!

    You don't have to though... If you are looking for an eighteen incher with an incredibly balanced featureset for a large AR platform, look no further than this barrel right here - and you can make this great decision on purpose.

  • heavy fluted 20in 308 win

    Posted by Olie on Feb 24th 2016

    Awsome! After break-in and cartridge developement my Nosler 168 gr. BT-HP are shooting 3/4 in groups at 100yards. I put this barrel on an Aero Percision build using a Primary Arms ACSS 4x14 scope. Took it out to 1000 yards and bang steel no problem. Definitely a great barrel. The only issue i had was during break-in lots of stuck cases in the chamber. Probabaly because of tight tolerances. After 300 inital rounds and two cleanings every shot after has had no malfuctions and works flawlessly. Would definitely recommend. Thanks for the great barrel!

  • These dang barrels are excellent!!

    Posted by Unknown on Dec 13th 2015

    This is the second barrel I've purchased in .308 from Faxon. It is superb. Shoots sub MOA with four different loads and bullet weights. You can't ask for more than that.

  • Nice barrel

    Posted by Steve P. on Dec 13th 2015

    Most barrel you can get for the money

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