Here is a female ASA thread Unireg that I purchased from Glenn Pensinger at Hole in the Wall Paintball, out of Michigan.
Glenn wrote me the following regarding this regulator:
“I’m not sure what the “320” stood for, but I don’t think it is the thread, probably have to ask Tom Kaye [or Dan Colby].
I think it was made for remote tanks to limit liquid Co2.
After I could not sell it retail, my team [(Guns of Paraside)] used it on a 2 1/2 lb Co2 tank, a “T” fitting, and two coil remotes to run two F1s for a target range to promote the field.”
I had never seen a female asa thread regulator from Air America before so this was new to me. I think this would be a pretty neat bottomline regulator to put in one of the old Fred Shultz Air America Air System Bottomline Mounting blocks.
You can see one of the full Mounting blocks on Brahim Estephan’s Ironmen Autococker with a Fred Shultz Air System here: