A very compact machine gun. It's 8x9x10. It works on a dispenser glitch, but Mojang doesn't plan on fixing it anytime soon. It holds 4032 arrows, or 63 stacks, which fill up 7 dispensers. It shoots about 28 arrows per second. The dispensers aren't all firing at the same time, but five or six are, usually. It will stop firing if all the torches burn out, but that's very unlikely. To fix it, break and replace all the torches or just wait a while.