there actually isn't that much in the way of single stacks. also ammo cap bans are not permanent, in the event that a ban is lifted or relaxed, it is easy to turn a 10 round double stacked 9mm into a 15 or higher round double stack but a 10 round single stack is impossible to increase without just making longer, more ungainly magazines.
ignore my complete lack of capitalization. I still have no problem correcting your grammar.
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