GEMTECH was the first manufacturer to make the now industry-standard P22 ADAPTER - Gemtech's 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 pistol (our adapter works with either the longer or short P22 models) to use standard 1/2-28 muzzle accessories and suppressors.