Gamma 556SL Muzzle Brake

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Great looks, great performance, light weight -- everything you'd expect from a premium muzzle brake at a reasonable price.


  • Weighs 2.1 oz, barely more than your standard flash hider.
  • The fit and finish. These are nice, you have to see it to believe it.

There are also specific benefits when running a 14.5" barrel. The brake will bring your overall length up to 16", if you pin and weld. The "SL" means "slim-line" -- the brake is slim enough that it'll pass through a .750 diameter gas block. So, if you ever decide to maintain or upgrade your gas block, you can leave your pinned brake right on the barrel. This is what that looks like.

Unless you're looking for some mega-light titanium brake, there is no reason, in our opinion, to spend any more than this. This brake will do it all. 

The specs:

  • 5.56 / .223
  • Slim-line design
  • 1/2x28 thread pitch
  • 17-4ph heat treated stainless steel
  • Black nitride finish
  • Includes crush washer
  • Length: 1.75"
  • Weight: 2.1 Oz