This is one of our most popular Colonel Mustard muzzle brakes!
In response to requests for a lighter .308 muzzle brake with a 5/8" x 24 thread that's more suitable for hunting and back-country shooting, we have developed a brake that is very similar in size, looks and operation to our very successful .223 brake.
CNC machined, high quality, steel, Phosphate finish muzzle brake - designed to reduce muzzle climb to allow faster follow-up shots and rapid on-target shooting.
Model: CM308LMB
We recommend a screwdriver with a few wraps of duct tape around the shaft - insert through the 'gills' of the brake and then twist on to crush the washer and keep it all straight and tight. Just ensure that you don't turn too far - if you back off you will need a new crush washer! See pic for correct install orientation.