MPN: 5H5


  • Optimized ports for maximum brake performance and low noise from shooters position
  • 360-degree ports - no timing necessary
  • Wrench flats on muzzle brake for easy installation
  • Full-auto rated
  • Pre-drilled 3/32" hole - can be permanently pinned and welded to 14.5" barrel to meet 16" length requirement
  • Designed and made in the U.S.A.

*Muzzle Timing Device sold separately.


  • Caliber: .223 Rem / 5.56 NATO
  • Material: Hardened steel
  • Finish: Mil-Spec black finish
  • Weight: 5.47 oz.
  • Length: 3"
  • Outer Diameter: 0.96"
  • Bore Diameter: 0.277"
  • Thread: 1/2"-28


  • .223/5.56 barrel with 1/2"-28 thread pitch


We always want just a little more. Faster cars, bigger steaks, and better guns are all a plus. The first two we can’t help you with, but the GEN-5 Helical muzzle brake will deliver a better gun. Top fuel performance is now available with a twist of your wrist when you install this top-of-the-line muzzle brake. This 1/2x28 muzzle brake is designed and made in the USA, from alloy steel sourced in the USA by a company where made in the USA still means something.

Performance and Grace with A Deadly Accurate Touch

This Helical muzzle brake delivers ultimate brake performance while maintaining a low-noise profile from the shooters’ position. Its’ improved design employs equal port spacing, eliminating the need for timing or leveling. This 1/2x28 muzzle brake is super simple to install, all you need is a wrench so you can skip the gunsmith. You will totally appreciate this brake when working in close quarters or near walls, that’s when this muzzle brake really shines. Whether your needs are tactical, or competition this Helical muzzle brake will never miss the mark. Its’ classic black Mil-Spec finish brings even more class to your weapon. Custom machined, the GEN-5 1/2x28 muzzle brake will not change your zero, but help you improve your accuracy. When we say high performance, we mean it! This custom muzzle brake is rated for use with full auto weapons. A little more is good, with this brake a lot more is great!

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Reviews (3)

  • Great break

    Posted by Unknown on 7th Jul 2018

    I've build 7 AR's and have only used this muzzle break on one, Just shot this one today and i can say ill be putting more on in the future 5 stars doesn't even cut it. 1000/10

  • Not Recommended

    Posted by Unknown on 5th Jul 2018

    l liked the looks of this item, but I'm getting quite a bit of concussion in my face, under my glasses and causing eye irritation. Also quite a bit more flash that I see and is much louder. I've shot a 150 + rounds thru it. My friend shot it, and noticed the same things. I put the stock Ruger piece back on, and all is good. It will be a nice paper weight. I do not recommend this muzzle brake.

  • CMB Helical Muzzle Brake looks great on my 10/22 bull barrel

    Posted by James H on 16th Jun 2018

    Attached this to a Beyer Ultralight .920 10/22 Target barrel and it really looks nice. The finish on the brake is compatible with the matte black barrel finish with no real noticeable contrast. The O.D. of the brake is a few thousands over the size of the .920 barrel but the radius-ed barrel end of the muzzle brake blends into the barrel well. This brake also adds some needed heft to the light weight barrel. As far as performance, since it is attached to a barrel shooting 22 LR's, I am unable to measure or notice any difference. This is a nice looking brake at a reasonable price and attaches easily especially since it has flats for a wrench. (I used an adjustable and it worked just fine). I highly recommend this product.

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