Overview Product Description Factory Mossberg 590M Mag Fed 12 Gauge 5 Round Magazine, Black - 95137 Magazine construction highlights: Hardened steel feed lips, over-molded steel shell ramps, easy-grip external molded design, proprietary self-lubricating polymer magazine body material, heavy-duty ASTM-A-228 music wire magazine spring, removable floor plate for easy cleaning, and a tough black oxide finish on steel components. Product Videos Custom Field Product Reviews