The Streamlight TLR-3X Slim USB Rail-Mounted Weapon Light with SL-B9 Battery Pack pairs slim weapon-light carry with strong output and practical mounting flexibility for everyday tactical use. Delivering 500 lumens, 6,500 candela, and a 161 m beam, it offers ambidextrous momentary, constant-on, and strobe operation in a compact profile. The reversible clamp system, impact-resistant polymer construction, BOROFLOAT glass lens, and IPX7-rated waterproof build help keep this light ready for low-light handgun applications.