Thank you for the replies...that's some useful info I hadn't seen yet.
The cz452 XII super match, like the cz 452 standard has a tapered barrel w/ a ramp sight. The front sight ramp has one mounting screw holding it to the barrel...no dovetail.
Both of the links posted show globe sights w/ dovetail mounts. This still leaves my original question...
is there a mounting adapter I can use to mount these sights (any dovetail sight)
without machining a groove into the barrel (as this rifle does not have any dovetail groove)?
Here are some shots of the muzzle and front sight: