The Trijicon HD XR Night Sights for Standard Frame Glock MOS deliver enhanced target identification and engagement capability at longer distances, built to meet the evolving demands of law enforcement and professional shooters alike. Featuring a thinner front sight post for a larger field of view, these sights help you quickly identify targets and confirm hits in varied lighting conditions, while the green tritium lamps provide dependable illumination with a 12-year warranty from the date of manufacture. Designed to fit Glock MOS models including 17MOS, 19MOS, 34MOS, and a wide range of standard frame pistols, the HD XR sighting system offers precise, fast follow-up shots and a clearer sight picture without sacrificing overall handgun balance. The matte finish reduces glare, and the three-dot arrangement with a yellow front sight enhances rapid acquirement and accuracy in low light or demanding environments. Note that the HD XR MOS Fit sights are not intended to be used with a red dot, due to height considerations, and professional installation is recommended to ensure proper alignment and performance.