Please read product description before purchase.

This is a (Silenceco Sparrow) style adapter for our (Long) style threaded barrels. It allows you to utilize the O-ring feature on the (Silencerco Sparrow Suppressor) that creates a better adapter to (Sparrow Suppressor) seal. 

Note: This adapter is for Twin Tech Tactical (LONG) style threaded barrels, part # (SR22TB) ONLY, and will NOT work with Ruger factory threaded barrels or our slide length (SHORT) style barrels part numbers (SR22TB-OEM). If you don’t have a Sparrow suppressor, our standard  1/2"-28 TPI x.400" part # (SR22TBA) adapter is recommended.