A drop in slide conversion kit from German Sports Guns. Converts your .45 1911 pistol to a .22LR 1911 pistol. Comes with slide barrelone ten round magazine and instructions in a plastic storage case. The GSG conversion kit is designed for full sized (Gold Cup/Government/Combat Commander) 1911 frames (it will not fit the Officers/Titan sized frames) and it comes with the parts kit to work on both 70- and 80-series type 1911 pistols.