All in One Tool Ruger Mark Series Pistols Tool Comes with tool, easy step by step instruction booklet and free video option. The tool works on all the Mark series I, II, III, and 22/45 model pistols without altering the gun. Allows you to clean all the recommended parts. Protects your gun and fingers from scratches. Ruger Mark series .22 pistol tool for disassembling and reassembling, and Magazine loader. TTAG gave a 5 star rating