Zev Technologies; iron sight sets are an inexpensive addition that a Glock owner can make to their firearm. The top 3 complaints from Glock owners are the trigger, grip, and sights.--Iron sight sets have the highest resolution and greatest ease of acquisition.-- Higher visibility will allow you to keep your sights on target.--The right Zev Technologies; Sight set will improve your shots on target dramatically over a factory Glock; sight set.--Notch width of .140 & Notch Dept of .145 will allow you enough room to keep your eyes on target during transitions.Zev Technologies; Parts always incorporate design, feel, and performance.Zev Technologies?; fiber optic sight sets are machined and assembled from Quality Billet materials and built to last.