DuraMag AR-15 Magazine Features The DuraMag magazine is built from 410 stainless steel rather than plastic a material choice that holds its shape and function through humidity swings desert heat and frozen tundra conditions where polymer magazines can degrade. Liplock technology keeps rounds secure and properly aligned in the stack reducing the chance of a round shifting and causing a feed malfunction. The Advanced Geometry Follower remains level throughout the entire magazine cycle for consistent reliable feeding from the first round to the last. Post and Hole construction adds strength and durability through robotically welded precision ensuring the magazine body holds together under hard use. A T-360 total coating technology covers the magazine inside and out providing corrosion resistance and smooth low-friction cycling that protects the stainless body over years of service. EverFlex anti-fatigue spring technology extends spring life significantly compared to standard magazine springs meaning the DuraMag maintains reliable feed pressure even after extended storage loaded. Compatible with AR-15 pattern rifles chambered in 5.56 or .300 AAC Blackout this 30 round magazine gives shooters flexibility across two popular chamberings. Finished in Flat Dark Earth and proudly made in the USA the DuraMag is a rugged magazine choice available for sale at GrabAGun. DuraMag AR-15 Magazine Specifications Manufacturer: DuraMag Compatible Hosts: AR-15 Caliber: 5.56 / .300 AAC Blackout Capacity: 30 Rounds Material: 410 Stainless Steel Style: USGI Color: Flat Dark Earth Follower: Black Anti-Tilt Available At: GrabAGun