Wouldn't try any type of glue personally. Is there any reason you can't wire it up differently, with say a tactile switch or such? That would be an easy attach and press affair. Btw, what do you class as a rat tail switch?
Sorry could not resist.....
ps don't forget a snuffer.
One candle power. No wonder brokenbiker never misses, to see anything it would have to sitting at the muzzle of the gun![]()
If it's a working piece rather than a show piece, I'd be thinking sod it to temporary fixings and making a proper detachable fixing worth a jot. A couple of screws and a baseplate are easily cleaned. They'll be a lot less awkward to clean than other parts of the gun.