DoubleStar Carlson Nitro Flash Enhancer 1/2X28 TPI Muzzle Brake Black. Designed to allow the gas to rapidly escape through special convex ports resulting in a much larger muzzle flash. Specifications for DoubleStar Carlson Nitro Flash Enhancer 1/2X28 TPI Muzzle Brake: Manufacturer: DoubleStar Color: Black Finish: Black Nitride Threads per Inch: 1/2x28 Gun Make: AR Platform Gun Model: AR-15 Condition: New Features of Doublestar Carlson Nitro Flash Enhancer 1/2X28tpi Muzzle Brake Thread pitch: 1/2 x 28 Style: AR15 Package Contents: DoubleStar Carlson Nitro Flash Enhancer 1/2X28 TPI Muzzle Brake What firearm models does the manufacturer say DoubleStar Carlson Nitro Flash Enhancer 1/2X28 TPI Muzzle Brake is compatible with? The manufacturer says that DoubleStar Carlson Nitro Flash Enhancer 1/2X28 TPI Muzzle Brake is compatible with AR-15DoubleStar CC475: Carlson Nitro Flash Enhancer 1/2X28 TPI Muzzle Brake Black