The Shrewd #3 Muzzle Brake is designed for .22 caliber rifles with a 5/8-24 thread, made from Chrome Moly steel with a silver finish, and requires gunsmithing to install.
It features a single expansion chamber with 42 total ports (21 on each side) angled forward to effectively reduce recoil and muzzle rise.
The exit hole is .220" nominally and can be enlarged to accommodate bullets up to .44 caliber, with the rear exterior customizable to match the barrel contour.