The Nightstick TWM-354 Tactical Weapon-Mounted Long Gun Light with Remote Pressure Switch uses a CREE LED rated 350 lumens. Working in conjunction with a high-efficiency deep parabolic reflector it creates a usable beam of light rated at 215 meters. This weapon light attaches to a Picatinny Rail of a long gun to operate the momentary-on and constant-on lighting modes. The housing is constructed from aircraft-grade 6061-T6 aluminum. It includes 1 set of 1913 Cross-Rail Inserts, 4 Cross-Rail Mounting Cap Head Screws, Allen Wrench, and 2 CR-123 Batteries.