Have read on Internet searchs that this is THE 30rd mag to have for reliable use in my 10/22. Hasn't been imported since Pre-Ban years. All steel construction, with a mag well adaptor that secures the mag with the Ruger's mag catch. Am being offered an absolute mint example still in factory wrap locally, but the asking price is high ($150). I have read Internet postings of several of these selling for over $300 ?? What would an old-time 10/22 fanatic say/?? Thanks in advance !! Joe