Pro Mag Walther P38 9MM Pistol Magazine Steel Blue 8 Round WAL 01-8RD. Constructed from heat-treated blued-steel with a follower lock-plate and base-plate molded from a proprietary DuPont Specifications for Pro Mag Walther P38 9MM Pistol Magazine: Manufacturer: ProMag Gun Make: Walther Gun Model: Walther P99 9mm Caliber: 9mm Luger Magazine Capacity: 8 Round Color: Blue Fabric/Material: Steel Package Contents: Pro Mag Walther P38 9MM Pistol Magazine What firearm models does the manufacturer say Pro Mag Walther P38 9MM Pistol Magazine is compatible with? The manufacturer says that Pro Mag Walther P38 9MM Pistol Magazine is compatible with Walther P99 9mmPro Mag WAL 01-8RD: Walther P38 9MM Pistol Magazine Steel Blue 8 Round