This set up has worked with me. No ambi access but it was simple and easy to manipulate.
I want a small control pad mounted on the fore end, and the light mounted separately on the barrel/mag tube. Like the remote for a ceiling fan/light, only a lot smaller.
"Gunfighting is a thinking man's game. So we might want to bring thinking back into it."-MDFA
A few companies have tried RF signaling for these things. Which I think is the only reliable method - because Bluetooth isn't reliable in this realm. Given the general proximity of the light to the remote, RF should be reliable and instantaneous. Unless of course the battery is dead. In a home defense context I think this works. I wonder if in a LE/MIL context the number of other RF frequencies in use might cause interference?
I've thought A LOT about exactly what you propose.
This approach sounds solid. Thinking over my previous post, regarding a hard-wired endcap light, I don't think it's feasible. A whole new receiver design would be needed and the connection would need to be routed in such a way as to not interfere with the action. I would imagine a savvy soul with a soldering iron and a garage door remote could drum up a workable prototype rather quickly.
Like @RevolverRob said, I don't see why RF wouldn't be workable for the average joe. I don't think there would be an immediate innovation drive from the .mil side since there is an effort to minimize EM footprints post-GWOT; although RF energy is so low.
So, I am of two minds about this - but I'll reveal ONE of them I am thinking about. This is inspired by things like the Reptilia Torch and the Cloud Defensive OWL. A machined central body that sits between a mag tube and barrel, with light body and batteries straddled by the tubes. It would be held in place by the mag tube nut, whether that's flat or an extension nut doesn't matter.
It looks large, but it's only ~60mm long overall (shorter than a shotgun shell). Two batteries, one on either side of the central body. One side is blank caps, the other is head and switch, modularity would be the name of the game.
An interesting alternative might be the Kinect Surefire Pro Mount.
https://kineticdg.com/product/surefi...d-m-lok-mount/
I have had good success with a Kinect two slot pic rail on my Arridus MagPul 1301 hand guard that I use to mount a Streamlight HL-X. I switched to it after having plastic deformation issues with a normal single slot MagPul M-Lok rail.