Introducing our +5 round OEM Glock mag extentions for the Glock 17.These are designed specifically for the Glock 17 OEM glock mags and will not work on other aftermarket magazines, but dont worry, we are working on more for other mags.These come with aftermarket spring so they function 100% and attach with a small screw in the rear for easy install.

Glock 17 OEM Mag Extension (+5)