Armscor Precision Inc Rock Island 1911 A1 Pistol Magazine .40 S&W 8 Round Blued 1 Pack Metal. 293B.LFL - This Armscor Pistol Magazine is made of all-weather fiberglass-reinforced polyester and is single-sided reloadable. It has a spring-loaded follower and ejection port to feed rounds properly. The spring is positioned to ensure the follower is facing the same direction for both loading and ejection. This ensures the magazine will not bind up in any discharge or accidental reload. The magazine also features a heat-treated stainless steel follower and ejection port that protects the spring and followers from damage. This magazine is designed to fit Armscor's 40 S&W caliber handguns and was optimized for use in Armscor's .40 S&W revolvers and compatible subcompact pistols. Specifications for Armscor Precision Inc Rock Island 1911 A1 .40 S&W 8 Round Pistol Magazine: Manufacturer: Armscor Precision Inc Gun Make: Rock Island Armory Gun Model: Rock Island Armory 1911A1 FS Caliber: .40 S&W Magazine Capacity: 8 Round Color: Blued Quantity: 1 Fabric/Material: Metal Steel Features of Armscor Precision Inc RIA MAG Rock Island Armory 1911A1 FS .40 S&W 8 Round Pistol Magazine Rubber base plate Fits RIA FS A-1 1911s chambered in .40S&W and 1911 like clones. Package Contents: Armscor Precision Inc Rock Island 1911 A1 .40 S&W 8 Round Pistol Magazine The Armscor Precision Inc Pistol Magazine With Base Pad For .40 S&W 8 Round Single Stack Blue 40SW.293B.LFL is a quality addition to the Armscor Precision Inc lineup. For more great deals on Pistol Magazines by Armscor Precision Inc please browse our Armscor Precision Inc Magazines page. What firearm models does the manufacturer say Armscor Precision Inc Rock Island 1911 A1 .40 S&W 8 Round Pistol Magazine is compatible with? The manufacturer suggests that Armscor Precision Inc Rock Island 1911 A1 .40 S&W 8 Round Pistol Magazine is compatible with Rock Island Armory 1911A1 FSArmscor Precision Inc 40SW.293B.LFL-8RD: Rock Island 1911 A1 Pistol Magazine .40 S&W 8 Round Blued 1 Pack Metal