Shield Arms S15 20 Round Magazine for Glock 43X/48

The S15 magazine is a patent-pending 20 round magazine for the Glock 43X and Glock 48. This S15 magazine is made of steel with a +5 round baseplate. CAUTION: without the steel magazine release from Shield Arms, the metal magazine will wear down the Glock OEM magazine release and will also not function properly.