DoubleStar Carlson .22 LR Thruster Muzzle Brake Black. 22 Thruster. Designed as a possible solution for the dilemma of shooting different brands of .22 ammo. Proven to be effective with several aftermarket .22 conversions. Specifications for DoubleStar Carlson .22 LR Thruster Muzzle Brake: Manufacturer: DoubleStar Color: Black Projectile Caliber: .22 Caliber Caliber: .22 Long Rifle Threads per Inch: 1/2x28 Gun Make: AR Platform Gun Model: AR-15 Features of Doublestar Carlson .22 LR Thruster Muzzle Brake Thread pitch: .22 LR Package Contents: Doublestar Carlson .22 LR Thruster Muzzle Brake What firearm models does the manufacturer say DoubleStar Carlson .22 LR Thruster Muzzle Brake is compatible with? The manufacturer suggests that DoubleStar Carlson .22 LR Thruster Muzzle Brake is compatible with AR-15DoubleStar CC480: Carlson .22 LR Thruster Muzzle Brake Black