If so can they be shipped via UPS person to person or do they have to go through a FFL dealer?
I believe Jim answered the curio/FFL half of the question but not the UPS half.
TomADC, your profile does not reveal where you live.
If your state laws allow face-to-face sales between nonlicensees, you may ship the gun(s) via UPS to a resident of your own state. I personally would not ship a gun to someone I have never met because of uncertainty of verifying the ID (and therefore the age) of someone I have never personally seen, but to each his/her own.
UPS requires all handguns to be shipped Next Day Air regardless of the distance involved. They also require all handgun shipments to be dropped off in person at a company-operated hub, NOT at a drop box or strip-center "UPS Store" (these are actually franchises and are not company-owned). This is a matter of company policy, not state or federal law. You may use the slightly less expensive "Next Day Air Saver" service that does not guarantee AM delivery, but the shipment will still generally cost you $35-$60, not to mention the potential hassle of traveling to a company-operated hub. It may be less expensive and more convenient to have your friendly neighborhood FFL dealer ship it in a USPS Priority Mail Flat Rate Box, which is illegal for nonlicensees (and C&R-licensed collectors!) to use, but could be less expensive even after the FFL's transfer fee is added.
Some(!) FFL dealers will not accept shipments from unfamiliar nonlicensees. This is not a matter of state or federal law either; it's a private business decision to avoid potential legal hassles if the gun turns out to be stolen or illegally modified. Make sure you check
before you ship.