JE Machine Tech AR-15 Muzzle Brake Wrench Flat w/Crush Washer 1/2x28 Black. The two-piece design makes it easy to install and break-in period. This gas tube muzzle brake creates less felt recoil than many of it's competitors which translates to more shooting time and less re-locutions. The port design minimizes the amount of recoil felt by the shooter however it still allows some muzzle climb when shooting in rapid fire. Now you can get the same JE Machine Muzzle Brake Carbine but with a muzzle brake design. Specifications for JE Machine Tech AR-15 Muzzle Brake: Manufacturer: JE Machine Tech Color: Black Threads per Inch: 1/2x28 Gun Model: AR-15 Included Accessories: Crush Washer Condition: New Package Contents: JE Machine Tech AR-15 Muzzle Brake What firearm models does the manufacturer say JE Machine Tech AR-15 Muzzle Brake is compatible with? The manufacturer says that JE Machine Tech AR-15 Muzzle Brake is compatible with AR-15JE Machine Tech PS-MZ4GR: AR-15 Muzzle Brake Wrench Flat w/Crush Washer 1/2x28 Black