Global Ordnance Glock 9mm 33 Round Pistol Magazine Black GO-GLK9-33-BLK-33RD. These magazines have a hardened steel insert which is encased in a high tech polymer (which is fully metal lined). The polymer coating protects the magazine and prevents deformation even when dropped from great heights. Specifications for Global Ordnance Glock 9mm 33 Round Pistol Magazine: Manufacturer: Global Ordnance Gun Make: Glock Caliber: 9mm Luger Magazine Capacity: 33 Round Color: Black Quantity: 1 Fabric/Material: Polymer Package Contents: Global Ordnance Glock 9mm 33 Round Pistol Magazine Global Ordnance GO-GLK9-33-BLK-33RD: Glock 9mm 33 Round Pistol Magazine Black