SHIELD MAG EXT +5/4 FOR GLK19/23 GLD

The Shield Arms Magazine Extension for Glock 19/23 adds 5 rounds to your Glock 19 magazine, and 4 rounds to your Glock 23 magazine. Their unique, easy access floor plate design allows you to quickly access the spring and follower without having to remove the extension from the magazine body. Comes with a 100% lifetime warranty, and the Shield Arms Spring for Life guarantee.