MagPump Magazine Retainer 9mm Double Stack Magazines GLOCK 17/ 17L/ 18/ 19/ 26/ 34 Black. These Gun Accessories developed by MagPump eliminate the need for reloads when you're just looking to grab your next mag. The MagPump GLOCK 17/ 18/ 19/ 26/ 34 9mm Double Stack Retainer for GLOCK 17/ 18/ 19/ 26/ 34 9mm Magazines also contains a red polymer material that's built tough while providing an ultra-simple design you'll find in almost any environment. Boost your efficiency at the range on the hunting grounds or at the course by using this MagPump GLOCK 17/ 18/ 19/ 26/ 34 9mm Double Stack Magazine Retainer. Specifications for MagPump GLOCK 17/ 18/ 19/ 26/ 34 9mm Double Stack Magazine Retainer: Manufacturer: MagPump Caliber: 9mm Luger Gun Make: Glock Gun Model: Glock 18 Glock 34 Glock 17L Glock 17 Glock 26 Glock 19 Country of Origin: USA Package Contents: MagPump GLOCK 17/ 18/ 19/ 26/ 34 9mm Double Stack Magazine Retainer MagPump MR-GLOCK: Magazine Retainer 9mm Double Stack Magazines GLOCK 17/ 17L/ 18/ 19/ 26/ 34 Black