This gun was the Canadian gun that replaced the British sten gun used in WWII. It was made with the magazine coming out of the side so soldiers could lay flat on the ground during attacks. It is semi or fully automatic gun. 

Comment what gun you would like me to make next!

You will need supports to properly print the magazine and barrel.

Also, while designing I put the magazine on the wrong side of the gun. So if you're lucky 13 is left handed the original file is for you.