Silencerco 0.578-28 Thread Protector - AC1361

SilencerCo's Thread Protector is ideal for your AR and fits 578x28 threaded barrels.When transporting your firearm or waiting on ATF approval, keep your threads crisp and protected with a thread protector. Careful not to cross-thread, simply twist the thread protector on the end of your barrel to prevent dust and debris from clogging your threads when no silencer is in use.