As dfaris said, the factory mount is for the standard 'tip-off' rings commonly used for nearly all rimfire scopes. There are mount options from B-Square, Weaver, and likely some others to use standard Weaver rings.
CZ's catalog says that the 452 'American' has the standard 3/8" dovetail, so if your rings work well on your 452 there shouldn't be any problem.
Seven High: My 39M has seen a good many shorts through it, mostly because I happened to buy a couple of cases of HPs dirt cheap at an auction several years ago. They function perfectly well and accuracy is at least on a par with most LRs out to about 25 yds. They make good pest control fodder, especially where noise might be an issue. If your rifle likes them well enough to do 1/2" groups at 25 yds, they make a superb short range squirrel hunting load. Very handy where housing developments are encroaching on your favorite wood lot. They're very quiet and much less likely to spook the other rodents or the local busybodies.
I haven't even seen any real .22 Ls in a goodly while, although the CCI Long CBs and Aguila Colibris are pretty easy to find. While they look very similar, they aren't the same thing at all. The genuine .22 L used the same 29 gr. bullet as the short at about 1180 f/s in HS loadings. The CB Longs also use a 29 gr. slug, but at much lower velocity. The Colibris use a 20 gr. bullet driven only by a priming charge. Advertised velocities are 375 f/s for the standard and 500 f/s for the 'Super'.
FYI, Aguila now recommends that both these only be used in handguns. I gather from that that there have been some problems with projectiles not exiting the barrel in rifles, but have no data on how common it might be. Personally, I'd take their advice as a 'ring' in my barrel would upset me.
I've used a few of the CCI LCBs with no problems, mostly on small pests like ground squirrels at very close range. I did kill two 'possums that got into our garage and wouldn't leave with them, but only because I was out of heavy pellets for my RWS 48 air rifle and it also has a largish target scope on it. Don't really recommend it, as one slug exited from a head shot and penetrated about 3/8" into a wall stud.