Like most firearms, start loading the mag with the 6, 9mm you see bottom left of the magazine, what you want to do next is to load the magazine into the weapon and pull the slide back then forward again to load the 9mm into the chamber. Next you can either press space or the trigger to fire!
I had to rename the project because of scratch moderation, made these stuff from scratch (the adjective, not this website!) and required very little code, it's considered one of my lowest quality projects (in code and mesh designs) thank you for taking a look at this project.