I have 2 Ruger factory 30 round mags for sale. Purchased about 10 years ago, never used. Both have a minor ding or 2 on the surface from knocking around over the years, but functionally like new.
$65 each or both for $120, will split shipping cost.
I doubt Ruger will offer these again even if the AWB sunsets, I remember they were quite scarce even in the early 1990s.
Not for sale in CA or where prohibited.