The trijicon bright & tough night 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 compatible with walther ppq/p99.Rear Color: Green w/White OutlineType: Tritium Front/RearFrame Material: MetalFrame Color: BlackFirearm Fit: Walther P99 PPQ PPQ M2Style: 3 DotFront Material: Tritium/PaintRear Material: Tritium/PaintFront Color: Green w/White OutlineFirearm Type: Handgun