ProMag Polymer Pistol Magazine Polymer FN 509 9mm 50-Round Black 50RD

ProMag Polymer Pistol Magazine Polymer FN 509 9mm 50-Round Black 50RD. The follower is injection molded and the magazine spring formed from heat treated chrome silicon wire. Specifications for ProMag Polymer FN 509 9mm 50-Round Pistol Magazine: Manufacturer: ProMag Gun Model: FN 509 Caliber: 9mm Luger Magazine Capacity: 50 Round Package Contents: ProMag Polymer FN 509 9mm 50-Round Pistol Magazine What firearm models does the manufacturer say ProMag Polymer FN 509 9mm 50-Round Pistol Magazine is compatible with? The manufacturer suggests that ProMag Polymer FN 509 9mm 50-Round Pistol Magazine is compatible with FN 509ProMag DRM-A84-50RD: Polymer Pistol Magazine Polymer FN 509 9mm 50-Round Black