Beaver: I did some work with the SM500, and here's what I figured out. If you want to add just a PVC coupler, you could cut off the remainder of the stock barrel and dremel down or just plain cut off the part of the shell where the coupler would be. But I thought of some different solutions that wouldn't require opening up the gun:
Wrap just a bit of E-tape around a piece of PVC so that it fits in the stock barrel and put that piece of PVC in a coupler.
It looks like so:
You could also put a (cut down) CPVC coupler in the PVC coupler like so:
I'm guessing you would be using PETG on this gun. If you are, wrap E-tape around the barrel so it fits in the PVC.
Then nest the PETG in a piece of PVC.
This method is great because it has almost no dead space. Also, incase your wondering here's what remains of the stock barrel:
PM me about prices or whatever.
Also, here is the master blaster and the two balls for ValveetaAvenger. PM me about prices.
Edited by venom213, 27 January 2009 - 05:53 PM.