Pro Mag Ruger P90 / P97 .45 ACP Pistol Magazine Steel Blue 10 Round RUG 04-10RD. The springs are precision wound using heat-treated chrome silicon wire. Bases and followers are injection molded from polymers selected for their durability. The result is quality consistency durability and reliability. Specifications for ProMag Ruger P90 / P97 .45 ACP 10-Round Pistol Magazine: Manufacturer: ProMag Gun Make: Ruger Gun Model: Ruger P90 Caliber: .45 ACP Magazine Capacity: 10 Round Color: Blue Condition: New Fabric/Material: Steel Package Contents: ProMag Ruger P90 / P97 .45 ACP 10-Round Pistol Magazine What firearm models does the manufacturer say ProMag Ruger P90 / P97 .45 ACP 10-Round Pistol Magazine is compatible with? The manufacturer says that ProMag Ruger P90 / P97 .45 ACP 10-Round Pistol Magazine is compatible with Ruger P90Pro Mag RUG 04-10RD: Ruger P90 / P97 .45 ACP Pistol Magazine Steel Blue 10 Round