Terry - If I am correct, the PA63 is a Walther PP clone, possibly with a lightweight frame, and is chambered for the 9x18 (9mm Makarov cartridge), not the 9x19 (parabellum/Luger). Ammo is plentiful. Cartidge capability is just behind the 9x19. They are supposed to be very reliable. HTH. Mikey.