Need advice designing a fair ultra tech gun.

[Ulzgoroth]

Originally Posted by Jaware

my main concern will be someone shooting it at their feet and detonating it when there's a swarm of little things. Them walking away Scott clean and everything else looking like the set of a cheap slasher B movie.

Using ammo from the gun would be a waste in that context. Better to just drop a small grenade or two.

But fundamentally, the DR you've provided your PCs means that they can employ tactics of spraying their own positions with shrapnel or projectiles. There's a limit on how powerful the things they use can be, sure, but it's more than adequate to chop anything remotely human or animal equivalent to ribbons.