The S15 Gen 2 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.This mag comes in several finishes. Get the Shield Arms magazines you have been looking for at The Country Shed!