Trijicon Suppressor/Optic Height HD XR Features The Trijicon HD XR Suppressor/Optic Height Night Sight Set is engineered for advanced target identification and faster engagement at extended distances a step beyond the standard HD line. A thinner front sight post opens up the shooter s field of view making it easier to track a target pick up hits and transition between threats without the post crowding the picture. The front sight s domed sapphire and tritium combination is twice as bright as prior generations which speeds up sight acquisition the moment the pistol comes on target. The rear sight s angled serrated U notch reduces glare under harsh light and keeps visual focus locked on the front sight where it belongs. Both sights use a photoluminescent paint outline around the tritium inserts so the set gathers ambient light and glows a visible ring even as tritium brightness fades with age extending useful service life in low light. The front sight carries a yellow outline for fast visual contrast while the rear uses a black outline U notch to frame the front dot without competing for attention. A steel frame construction stands up to the recoil and holster wear of duty and competition use over years of service. Sized in suppressor and optic height the set clears a mounted suppressor or red dot sight on the Glock 20 21 29 30 and 41 including S and SF variants and ships complete with the front sight rear sight and front sight screw needed for installation. Trijicon Suppressor/Optic Height HD XR Specifications Manufacturer: Trijicon Model: Suppressor/Optic Height HD XR Type: Night Sight Set Compatible Hosts: Glock 20 Glock 21 Glock 29 Glock 30 Glock 41 S and SF Variants Front Sight: Green Tritium with Yellow Outline Rear Sight: Green Tritium with Black Outline U Notch Height: Suppressor/Optic Height Frame Material: Steel Frame Color: Black Weight: 0.42 oz Available At: GrabAGun