Strike Industries Center Axis Targeting (CAT) Sight is designed as an auxiliary aiming device to assist in acquiring a quick flash sight picture in very low or zero light conditions. The sight allows you to quickly index the firearm and roughly align the existing sights while allowing the user to maintain target focus. The CAT sight is end user configurable to use preferred aiming solution such as a tritium lamp, fiber optic, high polish reflective rod, or a chargeable luminescent source and is universal to nearly any firearm. The sight is constructed of a high strength, impact resistant polymer with a high performance glow in the dark filament (not tritium).