Now you can mount any 1/2-28 end-of-barrel accessory on your rifle's non-threaded 5/8 barrel-including muzzle brakes, flash suppressors, compensators, sound suppressors, or fake flash hiders and suppressors-with this high-quality barrel thread adapter. This stainless steel barrel thread adapter easily attaches to the factory-finished plain muzzle using set screws. Comes in its natural silver finish.