Usps does ot ship firearms anymore under any circumstances.
To use ups or fed ex you have to go from ffl, c&r or licensed dealer to the same. And the shop you use has to have an account with ups or fed ex. It also has to go by air freight. Ups has 3 air services. I don't know about FedEx. Your shop will set it up online only including payment. Ups will then email a label to affix to your box. It either has to be picked up by ups or taken to one of their hub locations. They will take it with the label. Ups stores do not handle any firearms transactions. I just lost a sale due to the extra shipping cost. I know the post office used to Take fireams. But that's the past. All of the above can be verified. I suspect it's due to new govt regulations. And some of the ATF nazi's created new rules. The SMG shipping service by buds guns can help handle the paperwork for a small fee. They basically set up your shipment and tell you what shop will take it based on your location.
Phil


Philip S. Leadford