+2 Round Glock Grip Extension - Adds 2 rounds to Glock factory G20, G21, G29, G40 and G41 magazines while giving you better grip by adding additional grip surface. Replaces the factory magazine floor plate. Features Mag-Track™ which enable you to identify your magazines quickly for those who rotate their magazines.
This unit is for use on high capacity magazines only, it will not work on the 10 round G20 and G21 magazines. Not for use on Glock G30 10 round magazines.
• Made from high impact polymer.
• Drop tested at temperatures from -20 F to 350 F.