ProMag Pistol Magazine Glock 17/19 9mm Luger 30 Round Black 1 Pack DuPont Zytel Polymer 30RD. It is constructed of DuPont Zytel polymer with injection molded mag follower and mag spring formed from chrome silicone wire. Specifications for ProMag Glock 17/19 9mm Luger 30 Round Pistol Magazine: Manufacturer: ProMag Gun Make: Glock Gun Model: Glock 17 Glock 19 Caliber: 9mm Luger Magazine Capacity: 30 Round Color: Black Fabric/Material: Polymer Package Contents: ProMag Glock 17/19 9mm Luger 30 Round Pistol Magazine What firearm models does the manufacturer say ProMag Glock 17/19 9mm Luger 30 Round Pistol Magazine is compatible with? The manufacturer says that ProMag Glock 17/19 9mm Luger 30 Round Pistol Magazine is compatible with Glock 19 Glock 17ProMag DRMA27-30RD: Pistol Magazine Glock 17/19 9mm Luger 30 Round Black 1 Pack DuPont Zytel Polymer