Have been looking but I am striking out... Trying to make a bad little squirrel getter with an Escape UL and a reg on this little bottle would just be the best and final touch I would need/want.
Try pcptunes.com. they recommend a 400 cc bottle with it. Also try Jdsairman as sorce. Another option is install a condor hi-flo tank and talon tunes quick change top hat and get 30+ good shots.
I added a longer bottle to my TalonP. Quite a few more shots over stock! It uses the stock 5/8 -18 UNF valve rather than the M18X1.5 valve from the Condor.