Andy , your gun purchase question reminds me of when I was stationed in Tacoma, WA and I didn't want to pay 8.9% sales tax on my new computer. My room mate in the Barracks was from Oregon and was tax exempt from Washington State sales Taxes. So we used his card after the Computer Store Owner said " Of Course John is buying the Computer your just paying for it with your credit Card"
soooo if you have a good friend or relative who trust you with his/her life they of course being residents of the State in question can fill out the paperwork you can pay for it and since the law doesn't require individuals to keep sales records for transferring personal weapons from one person to another "yet!" your covered (i.e. as in gifts).