D&H Tactical is a manufacturer of precision aluminum and steel firearm magazines and a proud supporter of the Second Amendment. D&H tactical magazines are made in the US and trusted by allied armed forces around the world. D&H is a large supplier to the OEM firearms market with the D&H Tactical brand and private label ammunition magazines. Features: Heat Treated Aircraft Aluminum Black Teflon - Hard Coat Anodized 17-7PH Spring for Ultimate Protection Against Corrosion D&H Proprietary Follower for "Big Bore" Cartridges