I have a set of 1" Sako Optilock ring mounts, blued in good used condition that I'd like to swap for your version of the same in 30mm. Please note, these are the one piece mount version of the Optilocks, not the more usual two piece base and ring setup. These mounts are much lighter than the two piece combination, and can accommodate scopes up to 50mm depending on barrel weight. Also on other forums.