People need to understand that it's not UPS. It's the ATF and the federal government. FedEx also doesn't mess around with Ghost Guns. Here's an article from a legitimate news source
UPS confirmed to VICE News that it has updated its shipping policy to comply with the Biden administration’s new rules on ghost guns.
www.vice.com
UPS said it will “deliver firearms that are legally in transit,” but they “do not intend to seize or destroy goods unless a shipper intentionally or repeatedly violates UPS policy or federal regulations.”
"A FedEx spokesperson said the company last year “implemented even stricter requirements than required by law for the shipment of firearms through our networks.”
“FedEx prohibits customers from tendering specific firearm accessories such as bump fire stocks, rapid-fire trigger activators, unserialized firearms or ‘ghost guns’ and any other firearms manufactured using 3D printing,” the FedEx statement said. “As federal, state and local laws change, we will comply with those new regulations as well to protect the safety of our team members and the communities that we serve.”