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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  • Are you looking to build light??

    Posted by Unknown on 26th Dec 2015

    Built my wife a gun for Xmas, used this barrel, could not be happier. Would LOVE one on my 18" gun. A must have for a lightweight build.

  • Perfectly Built Barrel

    Posted by Johnny on 4th Nov 2015

    This may be the first time I've ever given a 5 star product review without a full test of the part...actually it is the first time and it is a 5 star product (give me a 6th to add after I put it thru its paces!). There's a lot of "custom" manufacturers out there but, if you're looking for a truly custom, well thought out, great materials used, every square inch of perfection in a barrel look no further than Faxon! I purchased this 16" Gunner for a lightweight duty/combat rifle I've been building to shave some more weight. The purpose was to build a STURDY, DURABLE light weight rifle I can rely on. Wanting something that was lighter but, still requiring accuracy after a 30rd string I think the Govt contour stepped down to the .625 gas block and pencil profile at the muzzle is a perfect fit for my use, needs and wants. Very well made, even down to the anodizing. I have just dropped the barrel off to be cerakoted by my friend (Houlding's Central California Gunsmith) who educated me on the Faxon line of products. Paired with the Houlding Irish Curse Compensator, this should be a great set up for my rifle and the final touch I've been looking for. Another awesome product from Faxon! LOVE THEIR PRODUCTS!!! Right up there or better than other high end custom barrel manufacturers I've used in the last and at EXTREMELY fair pricing for what you get. Can't wait to see what they come out with next!!! Thank you Faxon!!!

  • Great Products!

    Posted by Dan on 30th Aug 2015

    Just want to pass along that you guys make great products.
    My friend was very pleased with your 16" light barrel. Excellent craftsmanship,
    Thanks and keep up the great work

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