How to mount a pressure switch to the forearm?

[sytfu_RR]

I've searched found a couple threads but none really came up with a solution. Has anyone successfully mounted a pressure switch on the forward grip? ( I have a Mossberg 500 ). Does not seem to be a whole lot of options, as Velcro does not work/nor double stick tape. Any input would be greatly appreciated.

[weezil_boi]

you could dremel a slightly recessed space into the forearm, glue the switch in.

If the lwire is not coiled, you can even make your own coiled wire by slipping a sleeve of heat srink over the wire, then coil that wire around a pencil and slowly heat the sleeve until it is completely tight. let it cool ... done.

That is, unless you mounted the light to the forearm.