The trijicon bright & tough sights are a self-luminous three dot night sight alternative to traditional iron sights.They are the first choice of manufacturers and standard issue with numerous local, state and federal law enforcement agencies.This model is not a night sight set, but a steel replacement set for the original plastic sights on glock pistols.It features three white dots.Rear Color: WhiteType: Front/Rear SetFrame Material: SteelFrame Color: BlackFirearm Fit: Glock 17, 17L, 19, 22-28, 31-35, 37-39Style: 3 DotFront Material: SteelRear Material: SteelFront Color: WhiteWindage Adjustment: NoElevation Adjustment: NoFirearm Type: Pistol