16" GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ

16" GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ

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Just what is the GUNNER profile?

The GUNNER (all caps, as it is that awesome) is the pinnacle of performance, weight, balance, and value. Designed by our competition shooting staff for those who value performance and versatility, the GUNNER profile is a blend of two of the best performing profiles of all time, Gov't and Pencil. 

Proving that every once and awhile, the Government can do something right, the GUNNER's profile from the extension to the gas block mimics that delicious taper. From there, common sense takes over and the GUNNER moves to a .625" gas block journal and our famed pencil profile out front.

Removing the weight from the front of the barrel ensures maximum versatility and keeps material to the rear to maximize heat resistance and mitigate whip.

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: 4150 CMV Steel
  • Barrel Type: Button Rifled 
  • Barrel Caliber: 5.56
  • Barrel Twist: 1:8
  • Barrel Length: 16”
  • Barrel Profile:  Pencil
  • Barrel Gas System: Mid
  • Inside Finish: QPQ Nitride
  • Outside Finish: QPQ Nitride
  • Muzzle Thread: 1/2-28 TPI (Threads Per Inch) 
  • Gas Block Diameter: .625" 
  • Gas Port Diameter: .081"
  • Gas Block Journal Length: 1.9"
  • Barrel Extension: M4 
  • Weight:  1.37  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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12 Reviews Hide Reviews Show Reviews

  • I'm starting to repeat myslef

    Posted by Shwell on 23rd Jan 2017

    This Barrel is performed as good or better than I expected. I have quite a few barrels from Faxon firearms and I have come to trust in their accuracy, the craftsmanship, reliability, as well as their customer service.

    Feed ramps and extension are very clean and nicely done. Fit to my various upper receivers have been very consistent and borderline tight (this is a great thing).

    Great profile offers weight savings without jeopardizing function and longevity. With the right ammunition combination I am experiencing sub MOA groups.

    Highly recommend this barrel and many others offered by Faxon Firearms.

  • 16" Gunner Barrel is Perfect

    Posted by John in Tampa on 17th Oct 2016

    I have used the 16: Faxon Gunner barrel in a few applications and find superb accuracy, combined with great fit, finish, contour look and attractive over all weight package for the complete rifle.

    Great barrel and reasonably priced... I recommend this barrel for your next 16" AR platform build!

  • 16" GUNNER, 5.56 NATO, MID-LENGTH, 4150 QPQ

    Posted by Unknown on 5th Sep 2016

    Really like this barrel it and the bold assembly I bought with it worked great. I would recommend then to anyone.

  • Buy this barrel if you want the best!

    Posted by LaJoy Precision Inc. Custom Guns on 23rd Aug 2016

    After having one of my customers ask me to build them a lightweight AR I started to research what would be the best barrel I could find that would fit his requirements. After some time we settled on Faxon’s 16” Gunner barrel. This is one of the best barrels out there.
    The Gunner barrel is top shelf, very accurate, the contour and weight is perfect and you can’t beat the price.
    We have use this barrel in over 20 builds and will never look back.

  • Love this contour

    Posted by Unknown on 18th May 2016

    Really love this contour on a barrel. The finish was very high quality. Shot great !!

  • Everything i expected and more.

    Posted by Jawmarq on 31st Mar 2016

    The 16" Gunner is impossible to beat for the price IMO. Fit and finish is superb. First 5 shots using some 55gr sp ultra max was about 2moa, 2nd 5 shots fiocchi 50gr vmax was at 1moa. The coyotes don't stand a chance now. Thanks Faxon!

  • great barrel

    Posted by Randy on 28th Jan 2016

    I used this to build a light weight coyote rifle and it is fantastic. Very accurate and very light weight.

  • Fantastic, lightweight product.

    Posted by Chris M on 11th Jan 2016

    I learned about the barrel from Military Arms Channel, and I was looking to shed some weight from my RRA 16 inch HBAR. Holy *** what a difference! Rifle balances out much better now, and the accuracy is sub MOA as long as I do my part. Matching gas block and gas tube work like a champ. I am looking at the 11.5 inch version for a pistol build as well.

    Do not hesitate, it's a great product.

  • Second to none!

    Posted by RPS Gunsmithing on 7th Jan 2016

    I just finished a build for a customer using the 16" Gunner and I have to say, I am VERY impressed!!! Barrel extension to receiver was tighter than your "first time" and the finish was flawless. As for accuracy, I shot a 20 shot group with American Eagle XM855 62gr factory loads into the size of a dime at 100yds. I will most assuredly be using Faxon barrels for my future builds.

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