Any manufacturer I suppose. I've only found a plus1 extension. First and only Walther , loving it but would like more ammo for range time. Gonna be my edc once proven. Thanks for the warm welcome. Chuck
As far as I know only Walther makes mags for the PPS. They make 6, 7 and 8 round capacity. 7 & 8's give you a place for your pinky and are my preferred ones. Maggots makes a kit to add a round of capacity.