I put a surefire G6 on my M16 using a 1" scope mount and then got a pressure switch. Super, is right The adhesive backing isn't very strong so I used a cut bicycle tire tube and strapped it down. Flashlight, 40-50$, pressure switch for around 30$ and the scope ring was about 15$. It has a good light out put and works good on the rifle. I personally do not like the LED light out put. It is to white for my taste and does not seam to reach out like I want it to. Have fun.