The Trijicon HD Night Sight Set is designed to meet the needs of tactical shooters by delivering reliable illumination and fast target acquisition, backed by a 12-year warranty that guarantees usable glow when you need it most. This Glock-focused set fits large-frame models including 20, 21, 21SF, 29, 30, 36, and 41, ensuring a secure, distortion-free sight picture under low-light conditions. The package includes two high-definition three-dot green Tritium sights, with the front sight featuring a tall blade and a distinctive yellow outline to aid rapid front sight alignment, while the rear sight presents a U-shaped wide notch and a black outline for a clean, effortless rear-to-front sight pairing. Designed for dependable performance, the front sights bright, enduring illumination combined with Trijicons robust construction helps shooters maintain competence in dim environments and at close range draw and engagement. With the green Tritium and yellow-front combination, you gain improved contrast and quicker sight alignment against typical dark backgrounds, making these HD Night Sights an ideal upgrade for Glocks larger frame pistols.