Gemtech

Walther P22/S&W M&P22/Colt 1911-22 Adapter Caliber Sound Reduction Diameter Length Weight Mount Material Full Auto Rated Finish All you need to convert your Colt/Umarex 1911-22, S&W M&P22 or Walther P22 pistol (adapter works with either the longer or short P22 models) to use standard 1/2-28 muzzle accessories and suppressors. Adapters 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. NOTE: 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.