Yes, to drop a magazine takes no time at all. Getting another magazine requires practice. The more magazines the more time it takes to get them because they all end stored in a different location unless you are standing there with all of them on a table in front of you. Something that doesn't really happen in real world shooter situation.
2 seconds from last shot to first shot in next magazine is probably about as fast as even the most practiced can hope for. All the videos people posted on line show at least 2 seconds or longer by those showing us how fast it can happen.
I was referring to the person that drops the new magazine they are about to insert. Of course no one would ever do that.
Have you done any shooting? All this talk about time spent changing magazines just seems strange to me.
When I shoot my 40 cal pistol to qualify, the gun has a 15-round magazine inserted. I am wearing a gunbelt with a holster on one side and two magazine compartments each holding one 15-round clip on the other.
During firing, when given directions to fire enough rounds so that I need a magazine change during, I'd bet the action of dropping the spent magazine, and grabbing and inserting the fresh one takes a maximum
of two seconds. You're supposed to be able to do it without taking your eyes off of your target. It's all done by feel, so you've placed the magazines and pouches in a position on the belt where they can be grabbed and inserted blindfolded.