Only 5?
My favorite was the part in #1 about using things like car doors as cover. I suppose if you're trying to hide so nobody knows you're there in the first place, a car door might be useful, but once they've figured out you're there hiding behind a car door probably makes it easier to hit you - your body will tend to center within the geometry of the door itself, and it's a lot easier to hit near the center of a bright square(ish) object like a car door than it is a squiggly thing like a moving human body. Besides which, if a passing round happens to strike something heavier, like the locking mechanism - poof! instant metal fragments spraying out.
I think another one they missed is the Hollywood "myth" of the endless clip: the semi-auto pistol that, miraculously, can shoot 20, 30 or more rounds before it runs out. Or the six-shooter that can shoot 12 rounds before it needs reloading.
A more minor nit is what happens with all that brass? I used to go shooting at a public range when I was in college (plinking around with my Ruger P89 9mm). On one of the first few times out I finished shooting a clip of 10 only to have the gent sitting next to me calmly look over and say "do you mind" - seems I was standing a little too close to the right-hand side of my spot on the range and my brass had been hitting him. Thank God he was the polite sort. It's not just getting hit by the litter, but also running around on those hard floors after hundreds of rounds have been fired - brass shells are hard, roll-y little things and trying to run across a floor full of 'em is probably a bit like trying to run across a floor covered with ball bearings.
