Lost mags in a match? Really?
Oh, wait, what you meant is that yours will get confused with some other shooter's mags?
Mark your floor plates with a silver colored sharpie (you need to number your mags anyway, so you can accurately track any malfunctions to a particular magazine).
And, for goodness' sake, order a few extra from Midway or somewhere else, and wait, like everyone else.
Since the OP left the building, all this post did is add to my count as the OP is certainly not around to take the advice we are all giving him.
Oh well.