Trijicon Hk .45 Hd Night Sight Set-Orange Front Outline is a part of the high quality and dependable Illuminated Night Sights from Trijicon. All of the features you need for a price you want. Illuminated Night Sights from Trijicon are well known for their quality and Trijicon Hk .45 Hd Night Sight Set-Orange Front Outline upholds that standard.