Thanks. As you say, I think it's best to hold out for the correct set. Although 26mm would do if used with an insert, at least one of the pair has to have the recoil stop.@VSS There are a pair of RANS4 (26mm) scope rings on eBay at the moment but some foolish fellow has filed of the recoil stop making them quite useless and the seller is wanting £65 buy it now price, for me l wouldn’t even contemplate buying them but if you can make any use of them put in a silly offer and mention the missing recoil stop, but personally l would hold out for the correct set !