Compatible with Remington® 870 shotguns, the Surefire® DSF-870 Shotgun Forend Weaponlight is the ultimate shotgun-mounted tactical flashlight, designed to deliver exceptional reliability and lightning-fast field control. Featuring 2 user-selectable lighting modes with ambidextrous momentary and constant-on switch controls, and a slender ergonomic design, this weaponlight boasts a durable, yet lightweight aircraft aluminum housing with a corrosion-resistant anodized finish, designed to deliver exceptional strength, lasting corrosion resistance, and superior field performance. This compact tactical lighting system is a drop-in upgrade, designed to replace your shotgun’s original factory forend for exceptional control, while the indestructible LED emitter and precision reflector deliver an impressive 600 lumens of blinding white light for exceptional clarity in virtually any environment. Better yet, this flashlight features an impact-resistant, optics-coated polycarbonate lens for scratch-free field performance in virtually any environment. 1.5-hour runtime (high output mode). Sealed with reliable O-rings and gaskets for IPX7 waterproof performance.