So if you played LEGO Star Wars 3 then you probably remember the big machine gun that some of the clones carried. You might have also noticed that it never came with any set. So I decided a while back to inspect some pictures from the game and reproduce it in pieces. See the pictures:
Here is the gun completed
And here are the parts. As you can probably tell, you will need four pieces, a 1x2 plate with handle, a megaphone, a technic stick with knob, and a technic ring.
Hope that this post showed how to create this gun. If you built it please comment.