German firm of Ludwig Loewe produced a copy of this model that is nearly identical to the S&W. This German revolver was made under Russian contract, as well as for commercial sales. Contract model has different Cyrillic markings than S&W and letters "HK" as inspector's marks. Commercial model has markings in English. Russian arsenal at Tula also produced a copy of this revolver with a different Cyrillic dated stamping on barrel.