The American Precision Arms Gen 4 Stainless Muzzle Brake for 30 caliber rifles offers cutting-edge performance with its innovative design. Featuring calibrated U.R.P tunable top ports this muzzle brake allows for maximum adjustment ensuring exceptionally flat shooting with zero vertical movement. Crafted from durable stainless steel it boasts a 5/8"x24 thread pattern making it compatible with a wide range of firearms. The Gen 4 Little Bastard model is engineered to enhance your shooting experience by significantly reducing recoil and muzzle rise providing superior control and accuracy.