Originally Posted by Fluff
It is am vm68-exc with an air America expansion chamber. Good stuff
THe VM-EXCs were black. That looks like a standard VM68, or even an earlier PMI-3.
The EC is either the black-rain, missing the AA mini-valve, or the thumper missing the back bottle adapter? I think the thumper was the BB version? (or was that the automag or autococker version?)
WHich one was the whispering death?