This is a STEEL 8-round magazine with Buttplate and Follower for 1911 pistols in .45 ACP.
Built from rugged, heat-treated, blued, or nickel carbon steel, these 8-round magazines feature music wire internal springs and polymer followers/baseplates. Designed for combat and competition, the larger baseplate allows for positive handling and faster reloads. Mec-Gar®’s 1911 magazines combine the most trusted manufacturer in the magazine world with history’s most famous semi-automatic pistol design. Constantly improving on materials, manufacturing, and design, these mags are the perfect upgrade for your favorite .45. Mec-Gar has been specializing exclusively in firearms magazines for half a century now—building over 100 million magazines in-house, and developing a reputation as the world leader for firearms magazine production.