What AR-15 magazines would you stockpile for a complete SHTF / TEOTWAWKI situation? Lets think about this for a minute. The quick answer might be pmags. But how long do pmags last? Will they last 10, 20, 30, 40,,, or more years?
We know that aluminum magazines will last just about forever, unless they are abused or smashed with a hammer. From time to time a feed lip might become bent. Or an ear might break off while taking the baseplate off. But for the most part aluminum magazines are pretty solid.
If you are stockpiling survival gear for a long term SHTF situation, do you want to put all of your eggs in one basket?