...sorry but I believe in only US citizens having the right to keep and bear arms.
Just wow ...
But in any case, I'd have absolutely no problems selling a gun face to face unless the person is really shady. And I do mean really shady.
The problem with these horror scenarios is that if we overanalyze every move the potential buyer is making we're no better than ye olde nasty government who "wants to take our guns away."
The nature of rights is that they're not necessarily fun or easy or even good for everyone, but the moment we decide to deprive others of them, we're the ones who are depriving them the right, logically.
Now, I'm not saying we should sell to someone we know to not be able to own a firearm legally, but I am saying that all this talk of "I don't like their face" (which is exactly what it is) reeks oddly of the first step to the logic that "only the people whose face I like should own guns." And I don't think anyone who isn't on this board purely by accident can get behind that logic.
Edit:
Actually now that I'm thinking about it, the question here isn't so much about FTF transfers, but rather about the private citizen conducting firearms business. A certified dealer, for instance is no different than the average citizen in terms of power. Sure he has access to background checks and as such is held to a higher standard when it comes to the sale of firearms, but the law is written so that an individual lacking said access can still do business (in a more limited sense, of course) without being faced with legal ramifications.
So yes, the question here really is, "Who do you feel should own a firearm?"
I guess my feeling on that is that, unless I know either by their admittance or by some other source that they are not legally able to carry a firearm, I will sell to them. I am in the clear, legally and if I denied the the right to lawfully buy a firearm because for some reason I "didn't like their face" I'd be a hypocrite. The key piece of my logic here is a simple principle, name the one of wanting to be treated fairly.
I wouldn't want to be denied a firearm, because the seller didn't like ... oh .. my tats, my wife (who has even more than me,) my lifestyle, my car, my proverbial "face." Culture or "properness" is so varied that frankly any pretense that I can judge who is reputable or credible is false, simply because I don't know.
Take for example a "traditional" pacific islander who wants to buy my Mossy.
I am sitting in a parking lot and here comes this guy covered in ink and a nicely lowered car (just for cliché's sake) with some music of indeterminable language coming out of it. He steps out of it and walks up to me (with my tank-top, ink and metal coming from my car) and says "Yo, you the guy who's selling the Mossy?"
I say "Sure! You Bob?
He says "Yup. Been wanting one of those for a while now. Can I take a look?" I hand him the shotgun and he looks it over, nods and says "Nice. Just the workhorse you said." Satisfied, I grin and nod and say "Yup, it hurts parting with it, but I'm sure it's going to a good home."
We exchange some money and a bill of sale, that I copied from some legalese website and go on our merry way.
This scenario is as likely as it is controversial to let's say ... any white-collar kinda businessman with highly conservative values.
Clearly through our clothing, our vehicles and our language we've looked anything but "professional" and as such should clearly not own a firearm.
What he doesn't know, is that both our vehicles are paid for by a paycheck, courtesy of the U.S Army and that the "traditional pacific islander" is a shooting buddy of mine, who liked the look of my shotgun and is better with it than I am.
The fact is that we as private citizens simply don't have the means to know a "legitimate" person from a "non legitimate" one. And while it's our right to not sell to someone whose face we don't like, unless they give us a good legal reason to not sell to them very remotely we are kind of undermining the fair and legal distribution of firearms in accordance with the second amendment.