• 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: .308 Win / 7.62 NATO / 300BLK
  • Material: Hardened steel
  • Finish: Mil-Spec black finish
  • Weight: 2.9 oz.
  • Length: 2.25"
  • Outer Diameter: 0.9"
  • Thread: 5/8"-24


  • .308/300 Blackout barrel with 5/8"-24 thread pitch


If you need a tactical muzzle brake that manages point of fire concussion and overpressure the specialists from Custom Muzzle Brakes has just what you need. Whether you’re a regular duty tactical operator who frequently works in close quarters battle situations, or you only run simulations, the Rex Silentium Tactical Low Concussion Rifle Muzzle Brake is the go-to device for low concussion applications.

The Rex Silentium Low Concussion Muzzle brake does its work with the use of linear baffles instead of traditional radial ports. It’s engineered to avoid the overpressure and lateral concussion associated with suppressors and many other brakes. The elimination of external radial ports also means there’s no dust printing to deal with. Application becomes a matter of spinning the device into place. No timing required. The surface of this tactical muzzle brake is knurled giving it an aggressive appearance, reducing surface shine and creating a positive grip surface for tightening should it require tightening in less than ideal situations.

The Rex Silentium Low Concussion Rifle Muzzle Brake for .308 is 2.25 inches in length and 0.90 inches around. It’s threaded to 5/8 inch x 24 and finished with a quality Mil-Spec Black Phosphate coating that will stand up to heavy service in almost any environment. Like all of Rex Silentiums’ muzzle devices, this tactical muzzle brake is precision manufactured by American craftsmen using only quality American steel alloy. A quality product manufactured in the U.S. that will not only keep you on target, but keep you friends with your team members and the shooters in the next lane at the range. What more could you want?

Have a question?

Ask an Expert