Streamlight TLR-1 Rail Mounted Tactical Light TLR-1 are powerful, intensely bright, long-running, aluminum-bodied rail mounted lights. These lights are very durable. The Streamlight TLR-1 LED Glock Tactical Lights are shockproof, dustproof, and almost indestructible. The 3-watt Luxeon LED of the Streamlight TLR-1 Weapon Mounted Tactical Flash Light won’t break or burn out. The light has a Luxeon Super Hi Flux LED providing at a minimum of 2.5 hours of continuous run time. The Streamlight TLR-1 Tactical light is powered by 3-volt CR123A lithium batteries with 10-year storage life. The secure rail attachment system attaches and detaches quickly with no tools, without putting your hands in front of the muzzle. Streamlight TLR-1 rail mounted flashlight fits most handguns that are equipped with rails as well as long guns that have 1913 (Picatinny-style) rails. Streamlight TLR-1 Rail Mounted Tactical Rail Flashlights give you an important advantage in any low-light situation.