ProMag Steel Pistol Magazine Ruger All 9mm P-Series 9mm 20-Round Black 20RD. 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 Steel Ruger All 9mm P-Series 9mm 20-Round Pistol Magazine: Manufacturer: ProMag Gun Model: Ruger P85 Ruger P95 Caliber: 9mm Luger Magazine Capacity: 20 Round Fabric/Material: Polymer Number of Rounds: 20 Features of ProMag Steel Ruger All 9mm P-Series 9mm 20-Round Pistol Magazine Magazine body constructed of heat treated steel with black oxide finish Injection molded magazine follower Magazine spring formed from heat treated chrome silicone wire Package Contents: ProMag Steel Ruger All 9mm P-Series 9mm 20-Round Pistol Magazine What firearm models does the manufacturer say ProMag Steel Ruger All 9mm P-Series 9mm 20-Round Pistol Magazine is compatible with? The manufacturer says that ProMag Steel Ruger All 9mm P-Series 9mm 20-Round Pistol Magazine is compatible with Ruger P95 Ruger P85ProMag RUG-A10-20RD: Steel Pistol Magazine Ruger All 9mm P-Series 9mm 20-Round Black