According to Backyard Artillery, this insane, hand-crafted rubber band gun is the only "fully automatic machine gun that's legal in all 50 states!" And while it probably won't be very useful in say, robbing a bank or invading a small country, it'll definitely wow all the 10-year olds in your neighborhood. Designed to work like an old Gatling Gun, the shooter comes equipped with 12 rotating barrels and a live action trigger, and it can shoot off 144 rubber bands in a row. Sounds like you can put a serious hurt on the neighborhood bully. Of course, at $395 a pop, it seems like the hurt goes both ways. Link via Digg.