• Two ports on the top to reduce muzzle rise
  • Single stage chamber to reduce recoil
  • Four extended flash hiding prongs to reduce muzzle flash
  • Battle Arms Development logo is engraved on the top of the muzzle brake
  • Made in the U.S.A.

*Muzzle Timing Device sold separately.


  • Caliber: .22 Cal (.223 Rem. / 5.56 NATO)
  • Material: 17-4 Stainless Steel
  • Finish: Black Nitride or Raw Stainless Steel
  • Weight: 2.54 oz.
  • Length: 2.19"
  • Outer Diameter: 0.865"
  • Bore Diameter: 0.267"
  • Thread: 1/2"-28 TPI


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


  • 1x Battle Arms Development Thumper Muzzle Brake (.223/5.56)


A muzzle device belongs on an AR like peanut butter belongs with jelly. The fact that you want one isn't an issue, everybody does. The only real question is which one is right in your world? The choice comes down to features and performance of the particular muzzle device you're considering. You cannot go wrong with a quality device like the Battle Arms Thumper Muzzle Brake.

Down In The Front

With a standard AR-15 chambered in 5.56, recoil is not really an issue. However, the more you can mitigate recoil and muzzle rise, the faster you can get back on target and transition to the next one. The 5.56 Thumper Muzzle Brake gives you that edge. Competition shooters, as well as hunters, will benefit with the addition of a good muzzle brake to keep their rifle on target.

Battlearms Thumper Muzzle Brake Is A Match

The Battlearms Thumper Muzzle Brake is machined from stainless steel. Not only is it easier to clean and more corrosion resistant than standard steel, but the Battle Arms Thumper Muzzle Brake has another huge benefit. When your AR is wearing a stainless barrel and you screw on a plain old steel muzzle device you open the door to dissimilar metal corrosion. This occurs when two different types of metal come in contact in a corrosive environment. When you fire a shot you have heat and carbon build-up present in the barrel, this could be considered corrosive. Being made out of stainless steel, the Battlearms Thumper Muzzle Brake takes this element from the equation. Manufacturers use stainless steel for their high-end match-grade barrels. It just makes sense to match that barrel up with a stainless steel 5.56 Thumper Muzzle Brake.

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