The EGW Heavy Duty Scope Base is precision-engineered for CZ rifle models with 11mm dovetail rails and features a 20 MOA cant for enhanced long-range shooting performance.EGW CZ 452/453/455/457/511/512 11mm HD Scope BaseCompatible with CZ models 452 453 455 457 511 and 51211mm dovetail rail mounting system20 MOA built-in cant for extended rangeHeavy duty construction for reliable scope mountingIdeal for precision shooters and hunters seeking to maximize their CZ rifle's long-range accuracy potential with a sturdy reliable scope mounting solution.