Shield Arms S15 Gen 3 Glock 43X/48 15 Round w/ 5 Round Mag Extension Nitride Pistol Magazine Black 1 Pack Nitride Steel 20RD. Our unique easy access floor plate design allows you to quickly access the spring and follower without having to remove the extension from the magazine body. Comes with a 100percent lifetime warranty and the Shield Arms Spring for Life guarantee. Specifications for Shield Arms S15 Gen 3 Glock 43X/48 15 Round w/ 5 Round Mag Extension Nitride Pistol Magazine: Manufacturer: Shield Arms Gun Make: Glock Gun Model: Glock 48 Glock 43X Caliber: 9mm Luger Magazine Capacity: 20 Round Color: Black Condition: New Fabric/Material: Stainless Steel Number of Rounds: 15 Package Contents: Shield Arms S15 Gen 3 Glock 43X/48 15 Round w/ 5 Round Mag Extension Nitride Pistol Magazine What firearm models does the manufacturer say Shield Arms S15 Gen 3 Glock 43X/48 15 Round w/ 5 Round Mag Extension Nitride Pistol Magazine is compatible with? The manufacturer says that Shield Arms S15 Gen 3 Glock 43X/48 15 Round w/ 5 Round Mag Extension Nitride Pistol Magazine is compatible with Glock 43X Glock 48Shield Arms S15ME5INSG3BLK-20RD: S15 Gen 3 Glock 43X/48 15 Round w/ 5 Round Mag Extension Nitride Pistol Magazine Black 1 Pack Nitride Steel