Re: Which rings would you suggest,,,,
Laser,
My research, though incomplete, seems to suggest that those P-H bases use a 19mm dovetail.
I found this note on a site in the UK:
T050C - Two piece double screw mounts with removable steel recoil arrestor pin. Especially suitable for CZ 19 mm (large action) dovetails including the CZ550 and ZKK600/601/602. Also fits appropriate Parker Hale bases.
Best I could do.
Bob