This is silly and cool at the same time: A geek developed a machine gun that doesn’t fire off bullets but rubber bands. The fully functional gun is able to shoot a total of 200 rubber bands in rapid succession. The geek hails from Japan, which is no wonder as this is probably the only country with an official Rubber Band Gun Shooting Association [JP].
Here [JP] is how the guy made it, here is the Amazon Japan link to the how-to-build-a-rubber-band-machine-gun and here is another Amazon Japan link pointing you to a construction kit for beginners.
Watch the rubber band machine gun in action in the videos below.
Via Japan Probe