Standard factory magazine for Glock pistols. Glock magazines feature a double-stacked construction and are designed with an inner steel frame and an outer polymer shell to prevent deformation, even when dropped from great height or exposed to extreme environments. This magazine is designed to fit 9mm pistols and has a capacity of 24 rounds. It is compatible with firearms that will accept Glock-style magazines of the same type along with smaller Glock frames that can accept double stacked magazines.