A Legendary caliber deserves a legendary magazine. The .350 Legend DURAMAG SS is an AR-15 pattern magazine designed for serious shooters who require the most out of their magazines. Constructed from premium 410 stainless steel and built with advanced interior and exterior geometries to ensure ultimate reliability and feeding. These magazines utilize our T-360 coating to ensure incredible performance and product longevity through the harshest conditions. The .350 Legend magazines are available in 5 round and 10 round capacities and safe for extended storage while loaded. DURAMAG will not flex or swell like polymer due to storing while loaded or environmental/temperature changes. When performance and durability are paramount, make the switch to DURAMAG SS and never look back. Features: LipLock technology keeps rounds secured and in proper alignment Advanced geometry follower remains level for consistent feeding T-360 total coating technology covers the entire magazine, inside and out EverFlex anti-fatigue spring technology for long life and ultimate reliability POST and HOLE adds strength, durability and robotically-welded precision 410 stainless steel body marked specifically for .350 Legend