This is a factory Remington steel magazine for 1911 Pistols. The maximum capacity for this magazine is 7 rounds.
Remington Arms Company, LLC is an American manufacturer of firearms and ammunition in the United States. It was founded in 1816 by Eliphalet Remington in Ilion, New York, as E. Remington and Sons.
The 1911 is a single-action, semi-automatic, magazine-fed, recoil-operated pistol chambered for the .45 ACP cartridge. Designed by John Browning, the 1911 is the best-known of his designs to use the short recoil principle in its basic design.