• Compact design for CQB and Tactical Low Concussion to operators
  • 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: 3.8 oz.
  • Length: 2.25"
  • Outer Diameter: 0.9"
  • Thread: 1/2"-28


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


The muzzle device specialist at Custom Muzzle Brakes have a device you’re going to love, whether you find yourself in close quarters battle situations frequently, or you only do simulation exercises. You might even want to try this one if you take your spouse to the range and want a little more peace at home afterward.

Low Concussion Muzzle Brake

The Rex Silentium Tactical Low Concussion Muzzle Brake was designed for tactical situations involving close quarters battle and operator who must maintain a low level of concussion while using a muzzle device. This CQB muzzle brake not only manages recoil as beautifully as we’ve come to expect from past experience with Custom Muzzle Brakes’ products, but it significantly reduces concussion and overpressure. With this muzzle device, you will stay on target and not blast the guy next to you out of his socks. Almost anyone who has ever shot next to a suppressor enthusiast at the range can attest to the fact that this is something your team members and range neighbors will thank you for.

The Rex Silentium Tactical Low Concussion Rifle Muzzle Brake for 5.56 /.223 is machined from quality U.S. steel. It measures just 2.25 inches long and 0.90 inches in diameter and weighs in and 5 ounces. This Brake has no external radial ports so it doesn’t have dust printing issues. Instead, this CQB muzzle brake manages recoil using linear baffles. It’s effective without the concussion blast that makes so many devices unsuitable for shooting in small spaces or where team members are close by. The all-around knurled surface makes it easy to grip for application and give is a rugged look you won’t see elsewhere. This muzzle device doesn’t require timing, just spin it on and you’re ready to go to work.

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Reviews (4)

  • Rex Silentium Tactical Muzzle Brake

    Posted by Kevin Farrow on 25th Nov 2019

    This muzzle device works for me. It does reduce the concussion of the 223 round when shooting a shorter barrel AR style weapon. Also, while it isn't a noise suppression device it does project the sound to the front. I like the size and weight of the device, too.

  • noise forward

    Posted by Unknown on 29th May 2018

    reduces the noise so you can concentrate on the second round followup.

  • Works fantastically!

    Posted by Matt S. on 28th Dec 2017

    I have one of these on my ar 15 (5.56) and one for my ar10 (in 308). The muzzle blast beside and behind the rifle are mitigated quite well. People who go shooting with you will appreciate this device. I don't really notice much in the way of recoil management, but I don't think it's bad without anything attached. The real benefit, I can't say enough, is the lack of the Shockwave directly around the shooter.

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  • This Item: Rex Silentium Tactical Low Concussion 5.56 / .223 Muzzle Brake
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