I also count the variation which isn't exactly this stupid, but still pretty bad, where the cops gather right outside the apartment door of a bad guy, and then cock the gun, once again for dramatic effect. But everyone inside can probably hear it, and think, "hey is that a bunch of police about to come bursting in here? Maybe I'd better get my own gun and be ready to shoot." How about getting ready earlier, like right after they leave their car, or in the elevator up to the bad guys? They never really know where the shooting may start.
I’m a knife guy, and along with all the chambering of rounds and gun nonsense, when did knives start making sounds in the movies?
If you watch knife action in the movies there are lots of metallic sounds made by drawing them from the sheath and sometimes, just moving them a little while they are in your hand, I know that the whooshing air noises were the first knife noises hollywood adopted, but now the knives are making soft gun like clicks and metal on metal noises.