Originally Posted by Martian

Blame the movies. Go pick a generic action movie and you might notice the good guys carry Glocks and the bad guys carry Desert Eagles. Henchmen usually carry Uzis (sometimes mico-uzis) or AK-47's. And if there's a SWAT team, Ranger team or some similar good guy henchman equivalent, they almost always carry M4's or MP-5's.

Now me, if I was a movie villain, I'd carry something like a Sig P220. The .45 ACP may not be able to punch a hole through a baby elephant like the .50 AE does, but I'd have the massive advantage over the hero, who'd run right past me looking for the guy carrying the big ugly IMI piece.

But, y'know, I'm Canadian, so I don't know shit about guns. Probably better to ask someone else.