The Arcus is a rubber gun on a completely different level. The 3D printed rubber band Gatling gun can shoot up to 48 rubber bands in mere seconds, and unlike other rubber band Gatling guns, the it uses energy from the tension of the rubber bands to shoot and spin the barrels. What’s best, the whole thing can be made at home for free, as you can download, 3D print, and assemble it yourself.
A device like this is nothing without a proper demonstration, which you can check out in the video below.