So...yeah. There once was a graphic novel, called Superman At Earth's End. Or something like that. In either case, it was bad. Really bad. And at once point, Superman (who is the bearded idiot visible in the lower right) did what Superman has never needed to do before: he picked up a gun.
But this is SUPERMAN. When Superman does anything at all, he does it, well, super. So when he finally consented to pick up a gun, couldn't use just any gun. It had to be as super as he was.
It's called The Expunger. It is made of four miniguns. It does not kill; it *atomizes*.