The guys at QandO think this video of the ultracompact prototype FMG9 is pretty cool:
It's a neat product, basically a Glock 18 that folds up into a compact package. But parts of the video do bother me. Did you notice how the guy showing it off is sweeping all creation with the guns muzzle in various parts of the video? Likewise, having a "flashlight" on a gun is only good if you don't mind putting a hole in what you light up with it. And you can't forget muzzle discipline just because it doesn't look like a gun at the time. I'd imagine that it would make a pretty decent PDW for vehicle crews though.