For years, the Ruger P-Series guns were workhorse pistols that certainly weren't going to win any beauty contests, but they ran reliably and continue to provide dependable service to owners today. However, it's been some years since Ruger offered P-Series guns, so users of these pistols need to stock up on these Ruger P-Series steel magazines to get in more trigger time. The Ruger P-Series steel magazine is designed for use with 9mm cartridges only and have a magazine body made from heat-treated carbon steel. The magazine is treated with a black-oxide finish that combats corrosion and premature wear. Inside each Mossberg 702 Plinkster steel magazine, you'll find a spring formed from heat-treated chrome-silicon wire, as well as an injection-molded follower. The magazines are available with a 32-round capacity and are made in the USA. The magazine will not fit in the Ruger P85.