Compatible with Gen 4 and Gen 5 Glock® 17, 19, and 34 pistol magazines, the Timber Creek Outdoors Magazine Extension is an easy-to-install mag upgrade designed to deliver faster mag changes and superior firepower in any competitive or tactical shooting application. Crafted of lightweight aircraft aluminum with a corrosion-resistant anodized finish, this magazine extension is designed to withstand bumps, drops, and other range hazards, while the easy-to-install design offers field-ready service right out of the box. Order yours today!