SHIELD ARMS S15 GLOCK 43X/48 15RD MAGAZINE The S15 magazine is a patent-pending, flush-fitting 15 round magazine for the Glock 43X and Glock 48. The S15 is a steel magazine, and is the same length as the OEM Glock 10 round magazine, but holds an additional 5 rounds. Increased Capacity, Same Reliability Glock pistols and magazines are known for reliability -the S15 maintains that same Glock reliability, while giving you a 50% increase in magazine capacity in the same overall footprint. We accomplished this increased capacity with our patent-pending magazine geometry, allowing the rounds to stagger, thereby fitting more in the same amount of space. Proudly made in the USA by Check-Mate. Specifications 15 round capacity Same length as an OEM Glock 43X/48 magazine Easy to remove, impact resistant base pad High visibility follower High lubricity finish, Black Oxide coating Made in the USA Patent-pending