Maximize your firepower without purchasing new magazines using the Tyrant Designs® 9mm +4 Magazine Extension for Glock® 43X/48 pistols. Featuring a proprietary CNC-machined aluminum design, this magazine extension offers easy, tool-free installation. This extension features chamfered edges for improved control and snag-free carry, while a texturized finger knurl delivers a positive grip for faster reloads—even with wet or gloved hands. Plus, this extension is designed to work with the factory spring for fast installation, without inhibiting performance. Not Compatible with aftermarket 43X / 48 Magazines. Made in USA.