SilencerCo .22LR Rifle Thread Spacer - 1/2x28

Designed to shorten the AR-15 thread length to work with most .22 LR suppressors, the SilencerCoA(R) .22LR Rifle Thread Spacer - 1/2x28 is an easy-to-install thread spacer trusted by new and experienced shooters alike. Featuring a 1/2x28 thread pitch, this spacer will work with most AR-15 barrels. To top it off, this thread spacer is machined from solid steel for lasting service in virtually any target-rich environment.