Cracked did a 5 gun myths everyone believes article and I have to say they got pretty much everything.

So is there anything that they missed? I can think of nitpicky things like how Jet Li disasembled Mel Gibsons beretta in LW4 or how you can see the shell casings eject from the pulse rifles in Aliens that fire caseless ammo, but are there any major ones that the list overlooked?