Trijicon HD Night Sights, Fits H&K USP Compact, Yellow Front, 3 Dot Green Tritium HK108Y-600598
Trijicon HD Night Sights, Fits H&K USP Compact, Orange Front, 3 Dot Green Tritium HK108O-600597
Trijicon Tritium Night Sight, Fits HK USP Compact, Green/Green, 3 Dot HK08-600268
GG&G, Inc. Fits Streamlight TLR-1, TLR-2 and L3 / Insight M3 and M6, Lightweight Mount, Compact Size, Type III Hard Coat Anodized Matte Black Finish, Slim Line, HK USP Cmp GGG-1134SP