CZ USA 30MM Blue Scope Rings are available in the following sizes:
CZ527 30MM RINGS
19005 30 mm
Scope rings for CZ 527, 16mm dovetail.
CZ550 30MM RINGS ZKK602
19006 30 mm
Scope rings for CZ 550/ ZKK 602, 19mm dovetail.
CZ452 30MM RINGS EUR/CZ511
19007 30 mm
Scope rings for CZ 452/ CZ 511 (not for CZ 452 American), 11 mm dovetail.