• 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: .30 Cal (.308 Win. / 7.62 NATO / 300BLK)
  • Material: 17-4 Stainless Steel
  • Finish: Black Nitride or Raw Stainless Steel
  • Weight: 2.19 oz.
  • Length: 2.19"
  • Outer Diameter: 0.865"
  • Bore Diameter: 0.338"
  • Thread: 5/8"-24 TPI


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


  • 1x Battle Arms Development Thumper Muzzle Brake (.308/7.62)


The Battle Arms Development Thumper muzzle brake for the .308/7.62 round is designed to reduce recoil and muzzle rise. The screw-on brake is made from stainless steel, has a single-stage chamber, multiple gas ports, and flash-mitigation prongs.

Enhanced Performance

The Battle Arms Thumper .308 muzzle brake is designed to reduce perceived recoil, making your gun more comfortable to shoot. The muzzle brake also reduces muzzle jump to help you keep your sights on the target for fast and more accurate follow-up shots.

Quality Construction

The Battle Arms Thumper .308 muzzle brake is constructed from 17-4 stainless steel and is available in a black nitrite finish or unfinished stainless. Two gas ports on the top of the brake are designed to help reduce muzzle rise, and the single-stage chamber reduces recoil. Four flash-mitigation prongs help cut down on muzzle flash to reduce vision impairment. The brake has a 5/8 -24 thread pitch and weighs in at just 2.2 ounces so that it won’t add any appreciable weight to the barrel.

Easy Installation

The simple screw-on installation allows you to install and remove the brake as desired. Note that the Battle Arms Thumper muzzle brake does not come with a muzzle-timing device or crush washer.

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