Show off during your next range day with the Pachmayr® Mag Sleeve Grip Extension for Glock® 29 / 30 with Glock 20 / 21 Magazines. This extender allows you to carry your compact pistol with a standard magazine so you can enjoy greater capacity with additional rounds. Featuring durable and lightweight polymer construction, this grip extender simply slides over the magazine and fits securely in place with the supplied set screw. Plus, this sleeve also extends the grip area on your pistol so you can get a better and more comfortable grip for improved accuracy and faster follow-up shots. Allows for use of Glock 20 mags with Glock 29 pistols and Glock 21 mags with Glock 20 pistols. Made in USA.