A simple enough gun. This one, however, is a practical size (You can use it fairly normally)
Firing instructions:
To push the cartridge into the firing mechanism (The spinning wheels), use the left and right arrows to control the little pushing thingy. Once the cartridge is spent, move the pushing thing back to the start and use the down and up arrows to dump the cartridge. A new cartridge should just drop in. Repeat until empty.
Warning:
Don`t use the cartridge dumping mechanism until the pushing thing is clear of it. Not doing so could jam the mechanism.
The gun isn`t very accurate, so try not to actually aim it at anything in particular. Just have phun shooting stuff.

The final cartridge doesn`t always fall in straight, so fix it up with the hand if you need to.
I`m going to try working on making a smaller version to mount on a car of some sort. Please rate, comment, and give advice, because I`m still a noob and all.