Pay the price Smitty & you can get heavy machine guns & fully auto weapons. Gun shows in Pa. sell without checks, most auctions & estate sales do the same, it's a gray area I always had paper work filled to cover my butt & had two dealers that either did the sales with us or I would take the handguns to them after the sale & the buyer would go there. Even then after signing my paperwork & paying up front(non-refundable) some failed to show up to pick up their handgun because they knew they wouldn't pass the check. Even had one take me to a magistrate to get his money back & was arrested on outstanding warrants & these people walk the streets & have rights.
I don't want this to turn into anything personal so I'll leave it at that, you know my view & I yours, parts of the world have already made it to tomorrow so we'll still be around for another discussion.