Wtf is the story on these? I saw them at the Shot Show, and I have seen their site. But does anyone have one? Anyone used one? Has anyone actually seen a working version?

A buddy of mine has one of these conversions and I've shot it a couple of times.  Seems to be reliable for him, I've never seen it hiccup during a match or anything.  I wasn't crazy about the pistol grip forend and I unscrewed the grip from the fore end.

Personally I wouldn't pay the $200+ for the 2 extra shots that he has over my 8 shot Mossy.
If I can't hit'em with 8, 2 more won't help.

If they come out with one for the 870, I might try it...