Man, those are awsome, what scope rings and mounts are used on the CZ?
I am just using Warne scope rings. Med height I think. You can get a picatinny rail from several places. HotRod9mm on rimfirecentral has picatinny rails. A lot of guys will put Burris Zee Rings on. I didn't care for the picatinny look, so I just went with directly mounting Warne rings on the receiver.
What thread pitch are the CZ452's? If not 1/2x28 where can you get the adapters?
You can get smooth ones from HotRod9mm from his company, RT (link was posted by Go Ordnance), or you can order a knurled adapter direct from CZ. I have the knurled adapter. I believe it was $30-35.