Say it shoots a thin electric charge, when it hits the actor he dies and his body freezes, no gibs, maybe a bit of bleeding from where it hit, but the body is frozen still when it hits.

Does this exist? Either on its own or in someones army?

Just wondering, I have been looking for one

there's a "freeze" tool in the fbm4200 or whatever

try looking into the lua of that, I might mess around and see if I can make something like this.