The Gen 4 Little Bastard Muzzle Brake in stainless steel is engineered for exceptional performance with its innovative U.R.P tunable top ports. These ports have been meticulously calibrated to provide precise adjustments effectively eliminating vertical movement and ensuring a flatter shooting experience. With a thread pattern of 5/8"x24 this muzzle brake is designed to enhance accuracy and control making it a top choice for precision shooting enthusiasts seeking optimal performance from their 6.5mm firearms.