SGM Tactical is excited to introduce a new line of high capacity magazines designed for the GLOCK pistols. This particular magazine is designed for professionals and competition shooters who depend on a perfect shot every time. Expertly machined for exceptional quality and assembled to perform on every squeeze of the trigger SGM Tactical is a name you can trust! When you need a cost effective aftermarket replacement magazine turn to SGM! - Specifications and Features: - SGM Tactical SGMT40G31R - GLOCK 22 23 27 and 35 - .40 Smith & Wesson - 31 Rounds - Polymer - Matte Black