ProMag SW MP40 .40 SW 50 Round Drum Black Polymer Magazine

The ProMag SW MP40 .40 SW 50 Round Drum Black Polymer Magazine is a 50 round drum magazine that features the Smith and Wesson MP40 and .40 Smith and Wesson. 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.