Shrewd CM Model #5 multi-port brakes soften recoil and reduces muzzle rise. A single expansion chamber and 42 total ports angled 7deg forward provide maximum recoil control. Blast and sound are directed forward, away from the shooter. If shooting higher caliber, gunsmithing is required. Exit hole must be opened up to .020" larger than bullet diameter when shooting higher caliber. Can be enlarged to allow bullets up to .44 caliber. Mfg: Shrewd SPECS:4140 steel/Chrome Moly Material, Parkerized Finish, Fits 30 Caliber (0.308") Rifles With 5/8"-24 TPI Threaded Muzzle, 30 CAL-ready but can be enlarged to allow bullets up to .44 caliber, Crenulated End
