I just want to stay legal. I've done some research and the following is what I plan on doing. Please tell me what I plan on doing is wrong and/or illegal. Thanks.
I would like to mail a rifle back to the manufacturer for repair. I heard that UPS employees steal guns, so UPS is out. I heard that the USPS will give you trouble on purpose because they are anti-gun. So USPS is out. That leaves FedEx. I would guess that the manufacturer/wholesale importer/distributer is a FFL so I can ship it across state lines without having to use a FFL on my end. Also, since there is no change of ownership in the weapon, I can receive the gun back from the manuf/import/dist directly without having to use a FFL to receive the gun. I also should not declare it as a weapon because that will get it stolen by FedEx employees. I should also insure it as a "mechanical harvest device" or "mechanical projectile device".

the doc.