ProMag Ruger-57 5.7X28mm 20 Round Blue Steel Magazine

The ProMag Ruger-57 5.7X28mm 20 Round Blue Steel Magazine is a 20 round magazine that fits the Ruger-57 5.7x28mm. It features an injection molded magazine follower and the magazine spring is formed from heat treated chrome silicon wire. ProMag's magazines are proudly made in the USA.