Thanks for the info Zippy. Very enlightening.
The specific 870 I was looking at is;
http://www.galleryofguns.com/Genie/D...in=All&sit=All
It's the Express. I'll keep my eye out for the Wingmaster, however, I'm not planning this purchase until next year. So if your theory on them being gone, at least a "new" one, then I might be S.O.L.