The Tacticool22 Barrel Thread Adapter allows you to quickly and easily convert your non-threaded barrel to 1/2a ^2-28 threads. Now you can attach muzzle brakes and other end-of-barrel accessories and there's no machining required! Mount any 1/2a ^2-28 TPI end-of-barrel accessory on your non-threaded barrel, including muzzle brakes, flash suppressors, compensators, sound suppressors, or fake flash hiders and suppressors, with this high-quality barrel thread adapter. This barrel thread adapter easily attaches to the factory contour, plain muzzle with factory front sight, using the single set screw that is included.FeaturesMIL-SPEC black oxide finish for years of trouble-free serviceHigh quality stainless steel construction resists rust and corrosionHeld in place with one set screw that is flush when tightenedInstalls in less that one minute and removes quickly Cheaper than using a gunsmith or machinist