Glock Square Rear Sight Slim 6.9mm .271" Height Polymer Black White Outline

All factory Glock rear sights are interchangeable and elevation changes are made by switching out the rear sight (all factory Glock front sights are the same height). A shorter rear sight will lower the point of impact, whereas a taller rear sight will raise the point of impact. A one-step change (up or down) in rear sight height on a Glock 17 will result in approximately 2.4 inches of impact difference at 27 yards.Glock rear sights are identified by markings on the right side consisting of one