The WADSN Falshlight Tailcap Scout Light Rear Cap Switch is a durable aluminum accessory designed specifically for the M300 M600 series scoutlights. This rear cap switch features a momentary on function, making it convenient for hunting and other outdoor activities. The sleek black color and compact design make it a practical addition to your flashlight, providing easy access to the switch for quick activation. This reproduction piece is a reliable and essential component for your lighting gear.if you have a knock off scout light with a clicky this tailcap will let you hook up remote switch,thanks for looking,,,,I also sell tape switch in another listing