The lowest rings I've seen that clear the bolt handle with the older (pre 2015 mfg. 527 CZs) are Tikkas. It's my understanding you can get lower with the newer rifles. I've got the Tikkas on my 2001 527 .223 with an unmodified bolt handle using a Leupold 2-7x33. You can just get a piece of copy paper between the eye piece and the bolt handle but it works. I like them a lot better than the stock CZ rings.

Last edited by 43Shooter; 05/02/19.