It's a "faux" selector and is available on the Fulton site in the parts section for $49.95
Fake or not I think it looks great!
I was told that it was, I may try that sometime but there are not many matches around here.
Fortunately, Texas isn't one of 'em (at least not for game and non-game hunting - they do get pissy about scattergun capacity when huntin' birds).most states have laws about hunting with high capacity mags.