Compatible with the Smith & Wesson M&P Shield Plus and the Smith & Wesson Equalizer pistol, the Smith & Wesson M&P Shield Plus, Equalizer 9mm 15-Round Magazine maximizes your firepower potential, without sacrificing concealability, reliability, or control in fast-action environments. Proprietary single-to-double-stack design Precision-machined steel body Extended polymer floor plate with a durable polymer finger extension for improved comfort and control Corrosion-resistant black finish repels water, dirt, and debris for enhanced reliability and consistent operation in virtually any target-rich environment High-tensile steel spring and polymer follower ensure smooth, reliable feeding Made in USA