rainman from mcarterbrown tried using a clippard ram to do a timmy converion.
he used the a dual acting ram though. it ended up not working real well and he
just bought timmy parts to finish it.
i was thinking of doing what you are considering (spring return ram) because
there's a clippard dealer local to me and i have several blowbacks lying
around. (and spring return because it would end up being simpler and use a
everything i was checking out ended up having the ram sticking out quite a bit
from the back of the gun and i would need to custom machine some sort of
"hammer" to hit the valve and accept the connecting pin. you will also need
some way to securely mount the ram in place.
i think i was considering something like this one:
if you tried hard enough i'm sure it could work, but i doubt it's going to be an
easy drop in. also remember you're going to need an LPR and there's no
(normal) place to mount one on a raptor. and you'll probably also need an HPR
unless you want to operate at 800psi.