Glock Factory Original Glock 19/19C Magazine 9mm Luger 10/rd BULK. Factory Glock magazines have a hardened steel insert encased in high tech polymer. This polymer coating protects the magazine and prevents deformation even when dropped from a great heightNOTE: GLOCK MAGAZINES CAN BE VERY DIFFICULT TO LOAD WHEN NEW. OFTEN THE LAST ROUND WILL NOT FIT UNTIL THE MAGAZINE HAS UNDERGONE A BREAK-IN PERIOD. IT IS RECOMMENDED THAT THE MAGAZINE BE LOADED WITH ALL BUT THE LAST ROUND AND LEFT FOR A FEW DAYS TO COMPRESS THE SPRING. CYCLING THE MAGAZINE FROM FULL TO EMPTY MULTIPLE TIMES CAN ASSIST IN THE BREAK-IN PERIOD. Specifications for Glock Factory Original Glock 19/19C Magazine 9mm Luger: Manufacturer: Glock Gun Make: Glock Gun Model: Glock 19C Glock 19 Caliber: 9mm Luger Magazine Capacity: 10 Round Color: Black Fabric/Material: Polymer Steel Package Contents: Glock Factory Original Glock 19/19C Magazine 9mm Luger What firearm models does the manufacturer say Glock Factory Original Glock 19/19C Magazine 9mm Luger is compatible with? The manufacturer says that Glock Factory Original Glock 19/19C Magazine 9mm Luger is compatible with Glock 19 Glock 19CGlock 2232: Factory Original Glock 19/19C Magazine 9mm Luger 10/rd BULK