TruGlo TFX Tritium/Fiber-Optic Day/Night Sights Black TG. That means lightning-fast acquisition and pinpoint precision for sniper shooters everywhere. The Tritium/Fiber-Optic Truglo TFX Pistol Night Sights have a rear tritium light bar that gathers light from the fibers of the multi-coated fiber-optic lamp for even brighter light at day's end. That produces a blue-gray light at night and a green tritium light bar for twilight and after dark. The sights have a unique sporadically shaped lamp head which prevents damage to sights caused by intense light and the light-transmitting diodes are capped. This prevents light exposure from dangerously increasing the brightness of the sight. Truglo TFX Tritium & FIber-Optic Pistol Sights have a buckhorn rear sight lip that allows emergency one-handed operation. Also TFX Tritium & FIber-Optic Pistol Sights have a tritium bar over the sight battery hole which prevents light exposure from leaking out of the fast-stroking lamp head. This protects the battery from damage and prolongs the life of the lamp. Single target pins are used for emergency one-handed shooting with the Truglo Tru-Coat TFX Tritium Sight. Specifications for TruGlo TFX Tritium/Fiber-Optic Day/Night Sights: Manufacturer: TruGlo Color: Black Rear Sight Color: Green Country of Origin: USA Package Contents: TruGlo TFX Tritium/Fiber-Optic Day/Night Sights TruGlo TG-TG13SG4A: TFX Tritium/Fiber-Optic Day/Night Sights Black