[Surestick]

spanky and surestick, the actual valve fuction of the gun is not going to change. A Pneu Spyder would be like a Pneu Mag, in that the added components are simply bypassing the existing trigger mechanism to activate the same sear. No batteries, no ram in the lower tube. Those are Spimmys, and they're pretty well-documented.

Ahhh - I see the error of my ways... ;-)
That does make it easier. You still have the issue of finding a way to not have it go full auto if you hold the trigger down. If I recall the construction of the Spyder trigger (too lazy to get mine out of the closet right now) there isn't much room to easily mount something to actuate the sear in the same way the trigger iself does.
I would think that with a ram you could set it to pull the back end of the sear down & then keep going & let it go. You'd have to figure out a way to get it to catch the sear again when it returns though.

If you can hide the LPR in the grip & get the trigger light enough to be walkable it would be a great sleeper. People would think you had more dollars than brains w/a Spyder Victor fed by a Halo, until you let it rip that is.