I just received mine. I bought 2 Berretta 92FS, M9 10 round mags from Marstar. They fit right in. I am pretty sure these are the same the PX4 uses. Will have to get to the range to check to see if they feed well. If they do then I have 4 mags for mine.
It comes with 92FS mags but the PX4 magazine is different and needs an adapter and mag release. I've got tons of PX4 mags so I'd rather do a conversion over buying yet another style of magazine.



























