Wydan Cree LED T5 150 Lumens Tactical Flashlight w/Remote Pressure Switch, Weaver Picatinny Rail Mount and Battery - Black constructed of durable & lightweight T6 6061 aluminum body, made to withstand heavy recoil. Aluminum body, matte black finish, ring mount attaches to weaver/picatinny mounts/rail systems. For any 20mm Wide rails 150 Lumens Cree LEDs give you 50x longer life span than standard flashlight bulbs and 10x more battery life , On/Off activation either via switch on end cap or with remote curly cord activation switch Length: 3.62 " Weight: 3.5 Oz ( with wire switch )