The Troy Ind SSIGFBSTTBT00 Tritium Rear Folding BattleSight, Black Hardcoat Anodized, is engineered for rapid target acquisition in low-light conditions with Troy Industries' DI-Optic Aperture (DOA) flip-type design. This Tritium-equipped rear sight delivers its own glow for dependable sight recovery when ambient light is limited, while the optically engineered apertures center your eye quickly for a crisper, clearer sight picture than traditional round apertures. Built to exceed military specs and labeled BattleReady, it pairs rugged durability with practical versatility for AR-15 platforms, folding neatly out of the way when not needed and snapping into precise alignment when performance matters. Featuring two distance settingsup to 300 meters and up to 550 metersthe sight adapts to varied engagement scenarios, from precision close quarters to mid-range shots, making it suitable for military, law enforcement, and home defense applications. With a Picatinny fit and a low-profile black finish, it preserves firearm geometry while delivering reliable performance, rapid target acquisition, and consistent accuracy under demanding conditions.