Worst gun ever made

That would be Gerry Bull.

For the short, and easy, version, watch the movie Supergun, with Frank Langella and Kevin Spacey amongst others.

I'm suprised none of you have mentioned the croatian "Agram 2000"

world.guns.ru...

It doesn't have a shoulder stock (Nor has the capability to use one), and the only way to control it's 800 RPM's is to hang on to the circular foregrip. It's a poorly made copy of the Beretta PM12 (And very unreliable), made when the bombs were falling in the Bosnian War. It's only "claim to fame" is that criminals love 'em. Simply because there's always another one floating around for 50 cents.

Aweful firepower in more ways than one

I would say the worst gun ever made is probably one we have never heard of, because it was so crap.