I could never find out if any High Standard T48 rifles are still around ? nor could I ever find out which magazine the HS T48 used.

The current data states there were only 12 High Standand T48 rifles manufactured but I have seen serial number HS 13 which
was a special lightweight model. High Standard rifles were marked T48 while HRA rifles were marked T-48, FN were marked T.48

Also not all the HRA T-48 rifles were selective fire, some were semi auto only