Elevate your Glock 43X or 48 performance with the Shield Arms S15 Starter Kit. This innovative kit features a patented flush-fitting 15-round magazine, seamlessly integrating capacity with comfort. Designed for enthusiasts and professionals alike, the S15 magazine enhances reliability and functionality. With its robust construction, this kit ensures optimal operation under diverse conditions. Includes Steel Magazine Release for enhanced durability Modular Tooling for adaptable configuration Raised Ribs on the Back of the Magazine for precise alignment with OEM positions QPQ Nitrocarburizing Surface Treatment for superior wear resistance Upgrade your shooting experience with the Shield Arms S15 Starter Kit, where cutting-edge design meets exceptional performance.