The Shield Arms S15 Magazine Extension adds 5 additional rounds to your S15 magazine with innovative design and premium gold anodized finish. Features a unique easy access floor plate for quick maintenance without removing the extension.Shield Arms S15 +5 Magazine Extension - GoldAdds 5 rounds to S15 magazine capacityUnique easy access floor plate design for maintenanceMachined from billet 6061 aluminum with Type 2 anodizingIndex cuts for improved grip when drawing from magazine pouchIncludes 12 coil plus power spring100% lifetime warranty with Spring for Life guaranteeCompatible with Shield Arms S15 magazines onlyFits most aftermarket flared mag wellsProudly made in the USAEngineered for reliability and performance this magazine extension is perfect for competitive shooting duty use or personal defense applications where increased capacity is essential.