My bad. I keep forgetting that some of you live in free states. There's no such thing as a private transfer here, and hasn't been for several years. Even when there was, it was only for rifles and shotguns. Handgun transfers have been regulated for as long as I can remember. (Now, let's see -- what did I have for breakfast this morning?)
It used to be that, before you purchased a "concealable weapon," you'd have to go to the local sheriff, and get a permit that was good for a certain amount of time. I think that was just for retail purchases, though honestly, I'm not sure. We ditched that about ten years ago, or more.