R.V.D. v2

So I put the gamma gun idea on hold for a while, but I did it again today I class. So here it is cuz I can.

For the basic idea, its water exposed to radiation, that then becomes vapor, and is shot out using a air compressor, of course, there is more that goes into it. Its heavy, and inoficient though. Generally speaking, it would take about 4-10 water cartridges to kill someone, and only has a range of 3 meters max, so not very far. By the time you are about 2.5 meters away you wouldn't be taking many rems.

Also the water cartridges are the ammo.