The Streamlight TLR-4 Tactical Light with Laser delivers ultra-lightweight, compact weapon-mounted illumination and fast target acquisition with integrated C4 LED technology that produces 110 lumens and a peak beam intensity of 5000 candela, ensuring reliable visibility in critical situations, while a high-power red laser (640-660 nm) provides long-range aiming capabilities for both tactical and home defense scenarios; its durable construction combines an impact-resistant engineering polymer body with a 6000-series machined aircraft aluminum face cap finished in black anodize, a Borofloat high-temperature glass lens for clarity and durability, and a textured parabolic reflector that concentrates the beam with excellent peripheral illumination, all controlled by an ambidextrous momentary/steady on-off switch and a three-position mode selector to switch between laser-only, LED-only, or both, with a runtime of 1.5 hours in dual mode and 11 hours on laser alone, and a secure fit on a broad range of compact pistols via a key kit plus windage and elevation screws to retain zero, while rated IPX4 for water resistance and operable from -20F to +120F, making the Streamlight TLR-4 a versatile, reliable choice for professionals and enthusiasts seeking dependable compact weapon lights.