This is a small but fancy model of a crossbow, that is thought as a toy for office or school. The package includes 4 different parts, two parts which you can plug together for getting the main body, one part as reload mechanism and one as magazine. With this toy you can shot many different ammunition, for example pencils or drinking straws with a hot glue filled tip ( I had the best results with them). This product includes a .stl file which includes all parts, a .blend file with the complete crossbow and single files of all parts. For the fast customers this package includes also a .gcode file for the Ultimaker 2+, which Ive tested and a Cura project, likewise tested. Just try it, Im sure you will like it and have lot of fun!