TRIJICON HD XR NS for GLK 42/43 ORG. Building on the features of the current HD Night Sights, the Trijicon HD XR night sights are designed for the next level of advanced target identification and engagement at greater distances. A thinner front sight post allows shooters to have a larger field of view, which further enhances the ability to identify targets, speed up engagements, and see the location of hits on the target at longer ranges.