This is riflescope mount that can be used to mount the led light/IR illuminators on the bicycle or rifle barrel, with a flashlight/IR illuminatorson other side and a round tube with the one. If you have a flashlight and have an infrared filler, then you need two tool like this. You can install the filler and the flashlight separately on the scope mount, then use one extra. The other scope moun is fixed to the gun, so you can choose to turn on the flashlight or turn on the infrared filler during night hunting or shooting.