an AR-15 pistol is not a rifle… it’s a pistol. I would suggest referring to it as a “legal AR-format pistol” rather than just an AR-15 if questioned. The point here is that in many cases having an AR-15 pistol can avoid unintentionally breaking...
Regardless of what you buy, to be a legal pistol it has to be purchased as a "pistol" or "other" lower, and it can not be assembled as a rifle at any point. Once it's been assembled as a rifle, it is legally a rifle and can never be legally re-assembled as a pistol. That'...