Gemtech was the first manufacturer to make the now industry-standard P22 adapter - which is precision made to ensure alignment and avoid dangerous baffle strikes. All you need to convert your Colt/Umarex 1911-22, S&W M&P22 or Walther P22 (the adapter works with either the longer or short P22 models) to use standard 1/2"-28 muzzle accessories and suppressors.
Adapts are threaded M8x.75 to 1/2"-28 to fit any S&W M&P22 (Not compact version), Walther P22 with factory threaded barrel, Walther PPK/S .22 pistol or the Walther UZI Pistol and includes a knurled Gemtech thread protector (suppressor gun not included).
This item does not work with "California" neutered models of the P22. This item does not work with the GSG 1911/22 or Sig 1911/22.