[blueDestiny]

I guess i'll be lifting this from the dead.
Had the same accuracy problem with the M700 after mounting a longer silencer onto it. By removing the end cap on the silencer, accuracy is retained and you get to keep your silenced effect.
Only problem I've had with this, is that the foam inserts will fly out after 3-4 shots. I just put a little bit of tape where the thread is, and things seem to work pretty good.