This is an original design inspired by Vash's Pistol from the anime series, "Trigun Stampede" by Studio Orange. The completed model has moving Trigger, Hammer, spinning Cylinder, and Break action. You are purchasing a Zip Folder containing the STL files to 3D print your own version of Vash Pistol. The model has already been divided to fit an I3 style 3D printer. You will need to purchase dowels, magnets, and springs to fully complete the model. The model fully assembled is 20 inches. It should be able to be scaled down by 10%-15% without issue. UPDATE: Revision2 has been added! This is a smaller (17 inch) version of the model. If you purchased this model previously just redownload the files and you should see a folder marked Rev2 with the files. Don't have a 3D Printer, you can commission me to make a physical unit for you. Please contact me for current pricing and availability.