ProMag Sig Sauer Sig Pro 9mm 50 Round Drum Black Polymer Mag

The ProMag Sig Sauer Sig Pro 9mm 50 Round Drum Black Polymer Mag is a 50 round drum magazine that fits the Sig Sauer Pro 9mm. It features and 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.