Features:

•     High Output CREE LED 280 Lumens
•     Powered by 1 pcs CR123A or 16340 Batteries (Not Included)
•     Tactical Runtime = 100 Min
•     LED Module withstand Recoil Force
•     Screw Mount for 20mm Picatinny Rail
•     Single Pressure Switch Pad 
•     Aluminium with Anodized
•     Ultra Light Weight
•     Works with several other SF type tail switches now available