The Strike Industries Magazine Plate increases the capacity of the 9 Shield by 2 rounds, and the .40 Shield by 1 round. The molded design integrates seamlessly with the ergonomics, texture and styling of the M&P Shield and conceals well, despite the added length. Increase your firepower and ergonomics without sacrificing feel or looks.FeaturesPlus 2 round capacity 9mm, +1 .40S&WExtended grip surface that matches Weapon's grip patternImpact resistant polymerCompatible with both standard and extended length factory magazinesNoteMade for 7 round 9mm magazines and 6 round .40 cal magazines. The EMP+2 WILL work on the larger capacity factory magazines but with a noticeable gap between the EMP and pistol grip. The factory spacer will not fit flush with the EMP without slight modification.