So you know that purchasing a rifle or shotgun from an FFL, "out of State", over the counter, is a lawful act. Yes, you can go across the border to Arizona and buy a rifle. You can drive to Virginia and buy a rifle. No need to involve any FFL other than the one you're buying from.
You don't have to take my word for it: I'm quoting the BATFE directly.
I'm sick of false "information" being bandied about by people who "authoritatively" reveal that they don't know what they're talking about. This stuff is easy to look up.
Do me a favor and restrain from communicating with me in the future ok? bye.