The HIVIZ GLMFD21 FastDot H3 sight set for Glock MOS combines red fiber optic front and green tritium rear sights into a low profile, all-steel package designed for reliable, 24-hour illumination. This front sights fiber optics deliver bright, quick-acquisition aiming in daylight, while the ultra-bright encapsulated tritium rear sight provides enduring visibility in low light, enabling fast target alignment from dawn patrol to midnight hour hunts. Engineered to fit all Glock pistols in 9mm, .40 S&W, and .357 SIG and designed to fit standard holsters, the sight set maintains a sleek profile without bulk, preserving natural point of aim and unobstructed sight lines. Its patented technology delivers consistent performance across lighting conditions, making it ideal for duty, recreational shooting, and hunting where rapid target focus matters. HIVIZ backs these Tritium-illuminated sights with a 12-year warranty against illumination failures due to workmanship or material defects, subject to inspection, while advising proper handling and installation. This combination of rugged, all-steel construction, reliable 24-hour visibility, and Glock MOS compatibility helps shooters maintain precise sight picture and confidence in every engagement.