These new, "Coyote Colored,” Glock magazines were made to go with the new Glock 19X.
This handgun blends the Lower (Frame) of the Glock 17 with the Upper (Slide) of a Glock 19. Some think it’s the best of two worlds; a full-size grip with a mid-size slide to make a compact handgun, perfect in every way.
These magazines will also fit in your standard, “plain black Glock,” G17 or G34, as well as most other full, compact, and sub-compact 9mm Glocks. Because of that, they are also very popular simply because of their unique color. The 17 round magazine will fit flush with the G17/G34, but they will stick out a bit from the bottom of a G19, and a bit more in a G26.
The 19-round magazine has a factory +2 extension, and it will protrude a bit from all models.