Just when we thought we had enough problems with cops thinking innocent MP3 players were weapons
, along comes this Magpul prototype FMG-9 submachine gun. Ordinarily disguised as a flashlight, a touch of a button lets you pull a Megatron and flip out a fully-functional submachine gun. If you don't want either, the whole thing folds into a back-pocket sized brick -- but as the demo dude says, if it "gets nasty, get down to business." Video after the break.