Trijicon GL13-C-600777 Bright & Tough Night Sights provide Glock 42 owners with a durable, battery-free aiming system for low-light use. Three green tritium-phosphor lamps form a clear sight picture, supporting rapid alignment without requiring external power.Designed as suppressor-height iron sights, this model combines sealed illumination components with robust construction to help maintain visibility and function during routine use. Trijicon reports accuracy improvements of up to five times over conventional sights, with instinctive shooting speed.Tritium-phosphor lampsSapphire windowWhite ringsSilicone rubber cushionProtective aluminum cylindersSuppressor-height sight configurationA precision-built Glock 42 upgrade for dependable low-light sight acquisition.