This is a Elite Tactical Systems Group Magazine chambered in 9MM, model GLK-19-10.
This ETS magazine features extreme impact resistance" creep resistant feed lips and a translucent body that allows you to see your ammo count and type. It is compatible with Glock and aftermarket floorplates.
Features:
Extreme Impact Resistance
Translucent Body
Compatible with Glock and Aftermarket Floorplates