ZEV Technologies Sight Set .300 Front Co-Witness Rear. 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. Specifications for ZEV Technologies Sight Set: Manufacturer: ZEV Technologies Gun Model: Glock 17L Glock 19C Glock 21 Glock 17 Glock 29 Glock 30 Glock 27 Glock 26 Glock 19 Color: Black Gun Type: Pistol Front Blade Height: .300 in Package Contents: ZEV Technologies Sight Set What firearm models does the manufacturer say ZEV Technologies Sight Set is compatible with? The manufacturer says that ZEV Technologies Sight Set is compatible with Glock 19 Glock 26 Glock 27 Glock 29 Glock 30 Glock 21 Glock 17 Glock 17L Glock 19CZEV Technologies SIGHT.SET-300-CW-B-CW-B: Sight Set .300 Front Co-Witness Rear