I think most gun owners tend to own quite a few guns. I also have seen where people tend to buy multiple AR-15 rifles in order to build something different every time for no discernable reason other than they like to build them and show them off. The issue is that the AR-15 platform attracts certain kinds of people who really don’t have an interest in shooting as a sport. If it wasn’t available I would guess that many of those people wouldn’t buy some other rifle in its place.