here is what i just made
shoots twice as far as a super soaker, slightly wider stream, and no, the bottle is not to be shot, it has a 75 psi relief valve just in case
i taped two 6v batterys and hooked it up to my mini compressor, it can only pump 20 psi...
here are some pics



it guzzles water like mad, but the bottle changes fast, it is only held on a 3/4" pipe by friction, so it has a garden hose valve.