The Streamlight 69220 TLR-3 Weapon Mounted Tactical Light is a ultra lightweight & compact, the TLR-3 Weapon-Mounted Tactical Light features the latest in C4 LED technology and provides 1.5 hours of continuous runtime from a single lithium battery. Rail clamp designed to rapidly attach/detach from side of weapon. Models also available for H&K USP Compact frame and H&K USP Full Size frame.