[Ahnold]Phased plasma rifle in the 40-watt range?[/Ahnold]
yeah, a POV gun would be fun, imagine the mischief i could wreak with it…
lines up POV gun at billy-boy gate$ and fires…
[gate$]boy, our products really do suck and i’m evil…[/gate$]
I always thought it would be fun to have a small machine pistol or submachine gun that fired .22 shorts or even .22 short CBs. Small, relatively quiet, cheap to shoot and enough power to ventilate tin cans etc. Heck, as long as we’re going Class III, let’s add a suppressor!
They used to make freon-powered BB guns. I remember a news story about a little old lady who used one against a burgler. He threw his arms in front of his eyes, which is what saved his sight. It took something like 5 hours to remove the 500 BBs embedded in his skin. 
In addition to the Taurus and the Two-shot
Thunder 5 is a 5-shot .410 revolver. (Caution - Link has embedded sounds, and rampant gun-nut-ism)