Nightstick TWM852XL: The TWM-852XL is a Tactical Weapon-Mounted Long Gun Light crafted with a superior quality Cree LED. It emits a bright light rated at 850 lumens for an impressive duration of 2.5 hours and is capable of projecting a beam to a remarkable distance of 245 meters. The design includes a rear facing single switch that facilitates both momentary and constant-on lighting modes.This light is built to be safely and firmly mounted on a long gun picatinny rail. With an IP-X7 waterproof rating, the housing is expertly constructed from aircraft-grade 6061-T6 aluminum, ensuring durability and practicality in all weather conditions. The TWM-852XL package comes with one set (2 pieces) of cross-rail inserts preinstalled.To assist with installation and adjustments, an Allen wrench is included in the package, along with 2 CR123 lithium-metal batteries to power the light. This light combines ideal performance with robust construction, providing a dependable illumination tool for long gun applications.