Ameriglo brings a clear advantage to your shooting experience on and off the range.The original standard in self luminous night sights, the classic 3-dot design is the most popular among personal defense, military, and law enforcement.It is machined of steel and utilizes swiss-made tritium light sources.This model has green tritium with white outline and a black frame.It is compatible with glock 17/19/22/23/24/26/27/33/34/35/37/38/39.Rear Color: Green w/White OutlineType: Tritium Front/RearFrame Material: SteelFrame Color: BlackFirearm Fit: Glock 17/19/22/23/24/26/27/33/34/35/37/38/39Style: SetFront Material: TritiumRear Material: TritiumFront Color: Green w/White OutlineFirearm Type: Pistol