RIFLE THREAD SPACER
Many gun companies and gunsmiths make a common mistake and thread .22 LR barrels at AR-15 thread lengths. Most .22 silencers on the market will not shoulder correctly on AR-15 thread length. This spacer shortens AR-15 thread length to .22 LR thread length while ensuring concentricity. This spacer is threaded 1/2x28.
Manufactured by Dead Air or SilencerCo and for use with all brands of suppressors.
The SilencerCo Delta rifle thread spacer is .25" thick and has an outside diameter of .67". Part number AC114