Built with the dynamic handgun shooter in mind, the Trijicon HD is a three dot green tritium night sight set where the front sight has a photoluminescent paint outline that draws your focus to it. The HD XR features a thinner front sight compared to the standard HD set, which allows a much larger field of view and assists with acquiring smaller targets or targets at distance. The rear sight is also designed with a steep hook for one hand slide manipulations off a belt or holster. The tritium lamps are also warranted by Trijicon for 12 years from date of manufacture,

Specifications and Features:
Trijicon HD XR Night Sight Set SG603-C-600861
3-Dot Green Tritium Night Sights
Thinner Front Sight
Orange Front Sight Outline
U Notch Rear Sight
Front blade width 0.122"
Front blade height 0.225"
Rear notch width 0.169"
Rear sight height 0.218"
Steel
Black

Fits:
SIG #6 Front and #8 Rear such as P220/P226/P227/P229 in .40/.45