Getting shot in a 20 round AR magazine
I am a uniformed police officer and I carry a Colt 6940 on duty as my patrol rifle. I keep it loaded with a 30 round PMAG, but I keep a 20 round GI mag in my front vest pouch of my kevlar vest, it fits nicely between the actual armor and the trauma plate. Its relatively easy to draw it if I need a quick reload. I have enough stuff on my belt and I can't fit the 20 round mag on my belt.
Anyway, another officer commented that this practice was dangerous in the even that I was shot in this 20 round mag... as it would cause other rounds to go off causing more trauma to myself. I have personally never shot a full magazine to see what happens, so I have no idea. However, I have seen incidents where ammunition was dropped on the floor and exploded.
Does anyone have any experience/knowledge of what would happen if the 20 round mag were shot while it was in my vest?
I know when I was in the military, all my mags went on a tac vest setup, so I suppose the danger is the same?