I got ready to mount my new Arken 4-16 x50 scope on my CZ 527 today upon I remembered CZ has a 19mm base for the scope rings to attach to. The Arken scope rings are picatinny or 20mm. Is there an adapter from 19mm to 20mm.
Area 419 has a base made for the 457 and has is uct for standard rings on top
16.5mm is the only size that I am currently aware of. Good luck!
Double check the size of your dovetail!!
The 527 should have a 16.5mm dovetail, unless there is a different one that I don’t know about. If it is the 16.5mm dovetail, Amazon has the rail adapters you need.