Designed to be the most reliable magazine on the market, the Nighthawk Custom® Double Stack Government 1911 9mm 17-Round Magazine gives you plenty of firepower for the range or home defense. Parallel feed lips ensure proper cartridge alignment and are designed to position each round into the feed ramp at a consistent angle for enhanced reliability while factory-cut witness holes offer quick round counts on the fly. A heat treated and tempered stainless steel magazine tube and polymer follower offer superior corrosion-resistance and unmatched strength and are also tumbled and polished to help minimize friction for smooth function and feeding. The follower is designed to provide a positive lock-back after the last round and combines with a steel spring for smooth, reliable feeding in fast-action environments. Order now! Made in USA.