The AR-15 A2 Compensator Kit is designed for 5.56mm/.223 caliber rifles with 1/2-28 threading for reliable muzzle control and recoil reduction.AR-15 A2 style compensator kit1/2-28 thread pitch for standard AR-15 barrelsCompatible with 5.56mm/.223 caliber ammunitionReduces muzzle rise and felt recoilComplete kit with necessary componentsEssential for improving accuracy and control during rapid fire sequences this compensator kit is ideal for competitive shooting tactical applications and general marksmanship enhancement.