Anyone else seen the 9mm magwell inserts available from http://lichtenbergresearch.com/.
Might be just the thing to build a Russian Receivered Bizon clone, if you can live with Suomi Drums and Box mags. I don't have the AK Smithing Skills to build one using this well, but I thought someone on this forum might be up to the challenge. If someone decides to take a crack at it, see if the mag well dimensions are flexible enough to allow for using 7.62x25 mags (PPSH or VZ26).