The Ruger 10/22 Threaded Barrel Adapter from Tacticool22 enables you to attach end-of-barrel accessories on your Ruger 10/22, such as muzzle brakes, suppressors, and flash hiders. Comes standard with 1/2-28 RH threads. Black. This premium Ruger 10/22 Threaded Barrel Adapter quickly and easily slips on to the non-threaded barrel of your Ruger 10/22. The largest diameter is a little larger than current A2 Birdcage and similar flash hiders. Once on t