PC Walmart won’t be allowed to carry them unless: They come in a pretty colors. They turn that black stock to a nice walnut finish. They take off the flash hider and pistol grip. And limit it to a three round magazine. With those changes, they would probably want to sell it in full-auto and seek exemption from the NFA.
Maybe my Wal-Mart isn't PC, but they'll order a whole bunch of stuff that isn't in the display case. And they stock Mini-14's in there.