ProMag Ruger MK III 22/45, .22 LR 10-Round Blue Steel Magazine

This is a ProMag® STEEL 10-round magazine for Ruger® 22/45 Mark III pistols.
These standard capacity magazines feature heat-treated steel construction with chrome silicon internal spring wire and impact-resistant polymer baseplates. Bill Ruger launched his company based on a rimfire pistol he built in his garage—that went on to set the gold standard for accuracy, reliability, and value. They’re the most popular rimfire handguns in the world. Like all ProMag magazines, they come with a lifetime replacement guarantee, ensuring you’ll always have a working magazine on hand.