With strong steel construction and a coyote brown polymer sleeve, this 17-round, 9mm magazine is designed for either the Glock G19X or Gen5 G17 pistols. This mag features witness holes to track ammo count and offers the same reliability you would expect from any other Glock accessory. Product Specifications Manufacturer: Glock Model: G17 Gen 5 / G19X Caliber: 9mm Luger Capacity: 17 Rounds Features: Coyote tan, witness holes