Ruger sent me a calltag for FedEx Next Day, and specifically said to tell them (FedEx) that it is a firearm. FedEx rep only said thank you and it is policy that you let them now it is a firearm that I am shipping, and alot of people ship firearms. and they shipped back with signature required.
correct they are not necessary however the ATF examiner requested it from me because of NJ law of building something that was once a pistol, rifle or shotgun.
Many replies are why does the ATF care about state - the ATF examiners will not approve you for something illegal in your state, try to apply to form 1 a suppressor in NJ for example. its legal federally, your form 1 will be denied.
UPS stores are NOT UPS!!! Which is why they won't accept firearms. They aren't covered by the exemptions for common carriers. You need to go to an actual UPS customer counter.
The main guy at the customer counter in raritan center isn't 100% up on the facts, but knows enough that you can make it work.