This is a ProMag STEEL 8-round magazine for S&W 645, 4506, 4566 and 4586 pistols in .45 ACP
These ProMag enhanced magazines are from heat-treated steel with impact-resistant polymer baseplates, chrome silicon internal springs, and numbered witness holes. Smith & Wesson’s 2nd- and 3rd-generation pistols offer rugged stainless steel construction, All-American manufacturing, and an impressive variety of features that make them easy to fall in love with. Engineered to meet or exceed Smith & Wesson factory standards, these 8-round magazines are made in America and come with a lifetime replacement guarantee.
Handgun Magazines