Glock Rear Night Sight 6.1mm GMS Glock 17 Gen 5, 19 Gen 5, 26 Gen 5, 34 Gen 5 MOS

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