Of course the mag always catches the slide stop when you have it on the bench. The only time it happens is during firing, and you really can't watch it then.

The mags are stock Para (8 of them all the same), and in very good condition. One thing I've noticed about these mags is that the spring doesn't really seem very strong for the last two rounds. For example, when you press the first round down to slip the second one in, sometimes the spring will not press up enough to hold the second round in the mag. (Does my explaination make sense?) Is it possible that under recoil the follower is not getting up quick enough to catch the slide stop?

Terry