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Custom Muzzle Brake Extreme Duty Low Concussion .223 / 5.56 Muzzle Brake

  • L5 Extreme Duty Low Concussion .223 / 5.56 Muzzle by CMB
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  • Custom Muzzle Brake Extreme Duty Low Concussion .223 / 5.56 Muzzle
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Custom Muzzle Brake Extreme Duty Low Concussion .223 / 5.56 Muzzle Brake

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$89.50 $76.07
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  • Super deep semi-spherical exit chamber for maximum concussion reduction
  • Ample internal expansion chamber
  • One-piece, designed for CQB or short barrel systems
  • Optimized linear baffles for maximum brake performance and low concussion
  • No external ports = no timing necessary
  • 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: 10 oz.
  • Length: 2.75"
  • Diameter: 1.3"
  • Thread: 1/2"-28


The Custom Muzzle Brake Extreme Duty Low Concussion .223 / 5.56 Muzzle Brake is another gem developed by the muzzle device wizards at Custom Muzzle Brakes. There are situations when you really need to control concussion as well as recoil. The punishment of blast concussion is a real issue in certain situations, anyone who had been in the lane next to a brake enthusiast who’s a little short on courtesy can attest to that. It can be a real problem in a number of tactical and close quarter battle scenarios.

With the use of advanced computational fluid dynamics to guide their work, the craftsmen of Custom Muzzle Brakes have developed their low concussion muzzle brake. A super deep semi-sphere at the crown of the device, linear baffles and a large internal expansion chamber reduce concussion while managing recoil. It has no external ports to cause dust printing or blowback.

This 5.56 muzzle brake is the modern warrior’s best new sidekick and a gift to his teammates. With the Custom Muzzle Brakes Extreme Duty Low Concussion Muzzle Brake, the operator is able to stay steady on the target shot after shot because recoil is managed. The shooter and those nearby are saved the punishment of over-pressure muzzle blast concussion. This tactical design muzzle brake requires no timing, just spin it on and snug it up with a crush washer and it’s good to go. The knurled U.S. made steel body is coated with durable Mil-Spec Black Phosphate for long term durability. This device takes care of business like no other. You’ll never regret making it part of your team.

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