The TWM-854XL Tactical Weapon-Mounted Long Gun Light with Remote Pressure Switch uses an LED rated 850 lumens. Working in conjunction with a high-efficiency deep parabolic reflector it creates a usable beam of light rated at 245 meters. This weapon light attaches to a Picatinny Rail of a long gun to operate the momentary-on or constant-on lighting modes. The housing is constructed from aircraft-grade 6061-T6 aluminum. Package includes light with remote pressure switch installed with pressure pad (8" cable), rail connector, alcohol pad, 2 adhesive-backed hook and loop mounting strips, 1 set of spare cross-rail inserts and cross-rail mounting screws, Allen Wrench and 2 CR123 batteries. (Not compatible with rechargeable batteries.) NOTE: THIS PRODUCT IS ONLY AVAILABLE THROUGH AUTHORIZED LAW ENFORCEMENT AND SPORTING GOODS NIGHTSTICK DEALERS.