.:Eduard:. Mikoyan 21 Royal Class Combo explained

 The MiG-21 in MF version was produced in two main production plants, Moscow and Gorki. So, there were differences between these two subvariants. Following chart will clear how these details are solved by Eduard kit.
Royal Class of MiG-21MF in 1/72 (July 2018) offers parts for both subvariants.