I can understand that too, but you've already said that ammo isn't working in that gun and with multiple brand mags. Sounds like you already have your answer, but I get it.
Another small point to make, hipoint uses a single stack magazine, which feeds straight from the magazine to the chamber. There are no left/right angles that you have to worry about which do allow a greater number of bullet tapers to work in that given situation. The bolt strips the round and feeds it relatively straight into the chamber.
The AR9 (uzi mags), and most all other 9mm carbine magazines are not single stack mags, so they're not going to behave like single stack mags do.
Just throwing that out there.
Another small point to make, hipoint uses a single stack magazine, which feeds straight from the magazine to the chamber. There are no left/right angles that you have to worry about which do allow a greater number of bullet tapers to work in that given situation. The bolt strips the round and feeds it relatively straight into the chamber.
The AR9 (uzi mags), and most all other 9mm carbine magazines are not single stack mags, so they're not going to behave like single stack mags do.
Just throwing that out there.