Factory Magazine for the Smith & Wesson M&P Shield Plus/Equalizer 9mm 15-Round magazine compatible with both the Smith & Wesson M&P Shield Plus and the all-new Smith & Wesson Equalizer pistol. 15-round magazine giving the user an increase of capacity over the 13-round magazines while keeping a smaller footprint. The magazine features a single-to-double-stack design with a precision-machined steel body that comes equipped with an extended polymer floor plate with a polymer extension for improved stability. Specifications and Features: Single to Double Stack Design Machined Steel Body Polymer Floor Plate and Extension Manufacturer: Smith & Wesson Model: 3015890 Caliber: 9mm Magazine Capacity: 15-Round Additional Features: Polymer finger extension