I was at Wal-Mart today and found something quite interesting: a battery-powered water "machinegun." I remember reading about battery-powered guns from long ago, but never actually got to try them out. This is the Speed Shark V3 Mako Shark, made by a company called Cepia. 3.5-volt motorized firing allows for a continuous stream.
From looking at the box, they're compact and super-light, and since no pumping is required, you can use them in one-handed allowing for dual-wieldability. 16-ounce capacity is about the size of a large pistol, so you'd have to dual-wield just to have anywhere close to todays standard guns. Nozzle size is also about standard for a pistol.
However, this seems to be able to keep firing for a very long time, not consuming a whole lot of ammo. I held the trigger for maybe about a full minute and consumed maybe 1/4-1/3 of a tank. Speaking of which, the resevoir is translucent so you can easily tell how much ammo is left. As for range, box says 25 feet which I suppose isn't too bad for a gun this size.
Overall, probably not a weapon you'd want to use as primary, but as a sidearm it can far surpass ordinary handguns if you can afford it at $10 a pop. (I bought two, lol) Unfortunately, I don't own a digital camera so I can't take any pics, but it's tiny, it's white, and it's got a shark's head on the front of the resevoir. =P
Edited By Evangel on 1177883358