There is something to be said about having metal magazines around, whether they are USGI AR15 magazines or metal handgun magazines. If you look at the materials being used in so many modern firearms, like Glocks or even Magpul Pmags, they are extremely durable designs and have a lot of advantages over steel frame, but the one thing they don’t have is longevity. You won’t find any Glock firearms functioning 100years from now because the material will have broken down. I even have a few local Police telling me they have Glocks that are over 20years old and they can see the decay. With plastic Pmags, those are going to become brittle over time and they will loose strength after a few decades have passed. Kind of strange that this is the case because there is a major flaw, but what is perfect? What lasts forever?
Operator induced malfunctions cause the majority of firearm malfunctions and the other is lack of maintenance and magazine rotation is one of them. There are things you can do especially with a 1911 type of magazine where you can pull the springs out and stretch them that can buy you time. You have to be careful about gun show specials, I’ve got a lot of Korean 1911 magazines that I use as range mags but it’s also because they do jam on me and it’s a great way to do malfunction drills. They seem to have really short lives and the springs wear out and become weak, so even if the mags drop free, using Wolf gun springs or better quality magazines like Chip McCormick magazines is a much better idea. Personally I prefer Wilson Combat for My primary magazines, but they are more expensive but Chip McCormick has a very good manufacturer warranty on their products if that isn’t an incentive for a first time buyer.