I was at Bruno's in Phoenix and on the sale table were 26mm Leopold rings-several packages, IIRC they are all quick release. I do not think they are listed on the website, will need to call.
Come with a coating of dust at no extra charge

http://www.brunoshooters.com/M...=SFNT&Store_Code=BSS

Also Brownell's has Delrin 30mm to 26mm (or 1") reducing couplers. They are pricey but eliminate any ring marks on scopes.

They also have standard Leop rings

M