No, they are different.
I've actually had excellent luck with the latest batches of ProMags
Ram-Line used to make 30-rounders that would fit and function in both rifles (I owned a couple for my mini, and tried one in a friend's AR once; it seemed to work OK). I don't think they're still around anymore, though.For the record there have been some attempts to make mags that would work in both rifles.
Yep, and 30-round factory mags for $35. That's about the best you'll find.CDNN was selling new production Ruger factory 20 rounders for $25 each.
Mine came with free stripper clip guides.