Faxon Firearms Rolls Out Feathery Barrels, Flash Hiders, & Muzzle Brakes | SHOT 2017

Faxon Firearms

Faxon Firearms is making some of the lightest barrel setups in the industry with their newest offerings for 2017. Both their barrels and muzzle attachments have tremendously shaved down on weight in comparison to their competitors.

The SLIMLINE barrels are a pencil thin 14.5″ chambered for 5.56 NATO with a 1:8″ twist rate. The flash hiders and muzzle brakes that are mated to the SLIMLINE are pinned and welded so they are a legal 16.1″ barrel to make a “rifle.” The finish on the barrels is a QPQ salt nitride finish (this includes the muzzle brake or flash hider; consumer’s choice). The barrels are also particle tested, have a target crown, button rifling, and will utilize a mid-length gas system. The barrel itself is constructed from 4150 GBQ steel.

Now I already know there are going to be people asking… Why go and build such a crazy light barrel? That will affect accuracy! And you will not be able to shoot it full-auto!

Faxon Firearms

Faxon Firearms SLIMLINE 5.56 NATO 1:8″ w/ SLIM 3-Port Muzzle Brake

Will it affect accuracy? Of course it will. To the degree where the average consumer will notice and be hindered by it, probably not. Also, if you are concerned about your barrel handling full-auto cycling, I will be the devil’s advocate and ask, do you own a fully-automatic, registered lower?… Probably not.

What this feathery barrel setup was developed for was faster transitioning and movement of your weapon. Whether you have served in our military, shoot 3-Gun competitions on the weekend, or use an AR-15 for home defense, it is often important to be able to transition from one target to the next in a fluid, smooth, and fast manner. For those who shoot 3-Gun competitions, when was the last time you approached a stage with your rifle that had only one target?… Never, right? So these SLIMLINE barrels create a better balance for someone bracing their rifle’s forearm with an outstretched arm.

Now what makes these barrels legal to be rifles is their flash hiders and muzzle brakes which are ingenious as well. The SLIM 3-Port Muzzle Brake and SLIM Tri-Prong Flash Hider share many similiarities.

  • 1/2″ x 28 TPI
  • QPQ Salt Bath Nitride Finish
  • Diameter 0.620″
  • Caliber .223/5.56
  • Gun Barrel Quality Steel

The SLIM Tri-Prong Flash Hider weighs less than one ounce at 0.96 oz! The SLIM 3-Port Muzzle Brake is secretly injected with helium (maybe, but probably not) and weighs a mere 1.12 ounces. Aside from their incredible weight, or lack thereof, these SLIM attachments are small enough where a gas block can be removed or replaced without the need to take off the muzzle device. This is a pretty important feature on a barrel where the muzzle devices are pinned and welded.

The 14.5″ SLIMLINE barrel with a SLIM Muzzle Brake or Flash Hider permanently attached sells for $259 at MSRP.

Other places like Brownells and AIM Surplus should be receiving and selling these barrels very soon.



Hello everyone! The outdoors, Crossfit, and anything firearm related have always been my passions. I’ve been a guest writer for Sierra Bullets, am a Smith & Wesson Armorer, reloader, and have an addiction to classic S&W and Colt revolvers. Be sure to visit TFB frequently and keep your magazines full, my friends!


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  • Anonymoose

    Free float it and you won’t have to worry so much about overheating or inaccuracy.

  • Thomas Gomez

    Good job EH!

  • Tyler McCommon

    I have their 14.5in Lightweight on my AR. It’s ridiculously light for barrel. It’s surprisingly accurate as well even when hot.

  • Beardedrambler

    I’d like to honestly know how many people that say things about accuracy on lightweight barrels can even shoot well enough to notice.

    • Adam Scepaniak

      Completely agree!

  • Goody

    A quality stress free barrel doesn’t care how heavy it is.

  • Why did they use a .750″ gas block on a light weight barrel? If you want light weight you should go with a .625″. Selling a light weight barrel with the larger diameter gas block is dumb.I guess they did it so they could pin on the muzzle device but if I’m doing a build I want to choose my muzzle device for suppressor mounting and not some loud muzzle brake.

    • Bradley

      My guesses 1 this was probably necessary to maintain the ability to fit the gas block over the muzzle attachment. 2 .750 gas blocks are made in much wider variety. I had actually looked for a pencil profile with this gas seat so that I could use a specific gas block and tube I wanted. I doubt the weight difference between the two sizes would be enough to notice. If you want to mount a suppressor this barrel setup is obviously not what you want. You are right that it is otherwise unusual though.

    • Pat

      The article is incorrect. All of the barrels with pinned muzzle devices use .625 diameter gas blocks, not 750

      • Adam Scepaniak

        I never mentioned the gas block diameter, but it is in fact 0.625″

  • Roy Rapoport

    Sorry, just to be clear, you posted an article about a barrel extolling how light it is, thought it useful to mention how much the pinned flash hider or muzzle brake is, but then figured “eh, I won’t mention how much the barrel itself weighs.” Is that right?

    • Dave Webster

      Thank you!
      I hate being the whiny commenter but come on dude! Ballistic advantage has a ba hanson 14.5 with block that weighs 20 oz’s. Whats this one at?

      • Pat

        Weight on the 14.5″ pencil with pinned brake is 19.36 ounces

    • Adam Scepaniak

      With nothing attached, the 14.5″ barrel weighs 18.4 Ounces

  • Dave Webster

    “check out this super lightweight barrel! Look at all these figures!”
    Doesnt actually quote the weight.
    *Face palm*

    • Adam Scepaniak

      The 14.5″ barrel with nothing attached to it weighs 18.4 Ounces

  • valorius

    I really likey.

  • SGT Fish

    id definitely be interested in one after installing 2 heavy barrels on me and my GF’s competition guns (hers is fluted). my shot transition times slowed down even though my accuracy increased. I may be buying one of these or the BA lightweight barrels to put on an upper and see how it handles.

  • 40mmCattleDog

    “Gun Barrel Quality Steel” WTF does that even mean? Um I certainly hope its “gun barrel quality” steel and not “pot metal quality steel.” It would be nice to state the ACTUAL steel used so we can get an idea of durability not just some sweeping generalization of steel quality.

    • Lee Attiny

      helps to read the article 🙂 4150 GBQ steel.

  • RickfromPaso

    Wish there was more selection of adjustable .625 gas blocks.

  • throwedoff

    Sounds like the barrel I want for the AR I’m planning on building for my daughter. The weight of the barrel, flash hider and gas block is less than most of the stripped lightweight barrels offered by most of the other retailers out there.

  • Harold

    As a kitchen table gunsmith how do I get the gas block, or barrel nut on “with a SLIM Muzzle Brake or Flash Hider permanently attached” ?