The Hawkins Precision® Tank ST .30cal .875" Muzzle Brake - 5/8x24 is a 4-port muzzle brake designed to significantly reduce recoil for quicker follow-up shots and improved accuracy with your precision rifle. This muzzle brake features a self-timing, locking collar design that allows you to install this brake and lock down the collar so it times on the barrel the same way every time you install it. The straight 4-port design cuts recoil and reduces concussion and blowback on the shooter to help reduce fatigue from long days at the range or in competition. Plus, the ports are designed to collect less carbon for less maintenance. The Tank ST also boasts a 3/8 Hex Bit opening up front so you can easily torque it down to the same torque value each time for consistent mounting. Features 17-4 stainless steel construction. 5/8x24 threads. Made in USA.