I'm starting to get a bunch of emails about this. Apparently I said more than once that we plan to drop the 20 gauge mags.
We have decided that the Saiga 20 is still viable enough, and we have a fairly large volume of data to remake the magazines without a huge effort.
The tooling that made the originals is toast, edges are worn so far that I don't think they will make another 100 mags without being out of spec.
We are going to make a new set of tooling with a few updates that should make them more reliable and require less fitting.
Expect the updated product in the fall.