I ask for help !. We craft two identical units of weapons, separate them, unload one, put them back into the stack, divide again - and the weapon is loaded again !!! And so to infinity you can add cartridges.
https://drive.google.com/open?id=1Pn7iwvEKxncQaGYbJcZxNUNYgxWp0tgI
https://drive.google.com/open?id=1Pn7iwvEKxncQaGYbJcZxNUNYgxWp0tgI