11.5" Gunner, 5.56 NATO, Mid-Length, 4150 QPQ

11.5" Gunner, 5.56 NATO, Mid-Length, 4150 QPQ

(14 reviews) Write a Review

Designed for those looking to save weight while still allowing for the use of a suppressor long-term, the BIG Gunner is ideal for suppressed shooters. All for just about a single pound!

Behind the gas block will be a Government profile tapering to a shoulder and 1.1" journal .625 gas block. In front of the gas block, the barrel will continue straight to a 1/2x28 muzzle with full shoulder. 

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. 

  • Barrel Material: 4150 GBQ Steel
  • Barrel Type: Button Rifled 
  • Barrel Caliber: 5.56 NATO*
  • Barrel Twist: 1:8
  • Barrel Length: 11.5"
  • Barrel Profile: BIG Gunner Hybrid
  • 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"
  • Barrel Extension: M4
  • Weight: 1.14 lbs
  • Magnetic Particle Inspected!
  • 11-degree Target Crown

*As this barrel is likely to be used in full-auto applications, we are opting to stick with a 5.56 chambering to ensure absolute safety for our customers. 

**Due to the short dwell of the barrel, the gas port will be larger than most barrels. Customers are encouraged to use an adjustable gas block for optimum functionality. 

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.

Videos Hide Videos Show Videos

14 Reviews Hide Reviews Show Reviews

  • Excellent Barrel

    Posted by A Bingham on Feb 6th 2019

    If you are looking for a quality barrel that won't kill your build budget you will not be disappointed! The 11.5 is on my patrol rifle and I trust this with my life!

  • Excellent Barrel

    Posted by James Harmer on Dec 20th 2017

    I built an SBR utlizing this barrel. First time out to the range I was banging an eight inch gong at 200 using a red dot. I also ran a few mag dumps with the Fostech Echo Trigger supressed and unsupressed. FLAWLESS! I am so impressed and glad I bought it.

  • Fantastic barrel.

    Posted by Ray on Dec 4th 2017

    This barrel is amazing. I was worried about the dwell time and due to being short on cash I opted for the low profile gas block even though Faxon recommends an adjustable one. Still works great. This went on a pistol build. Haven't had any issues as of yet. Runs like a champ. The craftsmanship on the barrel is top notch. It has a very nice finish and fit into my aero precision M4E1 upper receiver perfectly. I haven't been able to do any long range accuracy tests but at 25 yards this barrel will get you 1 inch groups or smaller if you're a better shooter than me. Not much else I can say other than I would buy this barrel again in a heart beat. Faxon was a new company to me. I will likely buy from them from now on when it comes to my barrel needs.

  • Excellent for lightweight SBR

    Posted by Michael G on Oct 15th 2017

    So far I've been extremely happy with this barrel. I used it to build my lightweight(ish) SBR and have absolutely no complaints. Since it is on an SBR, I'm not terribly concerned about long range accuracy but rather practical accuracy. I haven't shot it past 25 yards yet, but I have put about 500 rounds through it and have been very happy with the results so far. I highly recommend it for this use case.

  • Designated Surpressed SBR

    Posted by StateTrooper on Jul 21st 2017

    Swapped this into my SBR and shot 60-90 rounds through it surpressed. I run a spike ST-T2 buffer and I experienced zero malfunctions. . Barrel feels good in the hand and the weight feels great installed under my 10.5" Midwest rail. Would reccomend to a friend looking to surpress a rifle.

  • Finish and quality look great!

    Posted by Unknown on Dec 15th 2016

    I haven't installed it yet but other Faxon barrels we've used are very accurate and the finish on them is top notch. I expect this one to be the same.

  • Great concept, not for everyone, excellent execution

    Posted by Nick Wood on Sep 22nd 2016

    I was intrigued by the idea of a mid length gas sbr and was excited when I saw faxon firearms, my favorite barrel manufacturer, implement it in a 11.5 form factor. This is as short as a mid length gas system will allow.

    I decided to pair this with one of the newer superlative arms piston systems, and wow am I glad I did. I was initially worried about gas port size and if the short dwell time with a piston system, but it has worked out great. First time out I was able to dial the gas adjustments in quickly and found that the recoil and violence of the action compared to my 10.5 carbine direct impingement was greatly reduced. In combination with the bleed off function of this piston system really makes for a soft shooting well balanced rifle.

    Accuracy is equal to my other faxon barrels, barrel length considered. No problem with 8 inch steel plates out to 200 yards (about all this rifle will ever need to hit). Thanks for your hard work faxon! Keel up the good work

  • Great barrel

    Posted by Unknown on Sep 12th 2016

    Works great

  • Great Barrel for the price

    Posted by Kyle on Sep 6th 2016

    For the price this is an excellent barrel. Lightweight and the finish is spot on. I will try to be as critical and fair in this review as I can.

    There is no need to a gunner profile for a barrel this short. A regular GI profile would have been fine, the weight reduction for the inch and a half of barrel after the gas port is very little savings. This does allow you to use a smaller gas block, but the smaller diameter, also means you can't use existing gas blocks and the selection of adjustable gas blocks at this diameter is poor. I feel like the gunner profile for this barrel has more cons than pros. I wonder what rigidity and strength are sacrificed at the end of the barrel for such a minimal weight reduction.

    I do not think I need to describe the weight of this barrel, it is an absolute must to use a GI profile or Gunner profile for an SBR or pistol build. Forget about using a heavy barrel, you'll be front heavy and slow, any accuracy gains you'll receive will be negligible with a short barrel in my opinion. I avoid pencil barrels as I like to have a suppressor on my front end and I don't want my barrel to bend during moderate use.

    I am not terribly impressed by the accuracy so far, though I've only shot enough rounds to tune my gas port and get this zeroed with my sights and optic. I am not disappointed with the accuracy either, remember when going SBR the typical goal isn't to have a rifle that can hit steel at 500+, it's to make a compact rifle that is light in the hands and can hit targets within 100-200m (or closer).

    This barrel will fit the requirements, the finish seems durable, the accuracy is acceptable (I expect that using mk262 I may be able to squeeze out more consistent shot groups).

    Good luck, I do not think most users will be disappointed with this barrel at this price.

Related Products

Customers Also Viewed