I don't think Pachs were made for the XR3. The Super Single Six came out about 1964 and the XR3-RED about 63.
Theres probably some late assembled Super/ XR3 guns , as usual, out there.
Better informed folks than I would know.
I used to put Pachs on almost all my shooters back in the day but I don't think I ever put any on my Single Six's. Heck, back then they were all shooters.
I would find those hi class Jay Scotts, though. :roll: :lol: Still got a bunch of those.