This has NOTHING to do with Sale and Shipment of weapons, your Quoted Codes have to do with Public Safety on Public Transportation.THOUGHTS TO CONSIDER:
Does Georgia have a law that generally bans introducing a firearm (or other dangerous thing) into a commercial transportation terminal facility? (yes, Code section 16-12-127)
Is violation of that law a major felony? (yes, 20 years in prison and a $15,000 fine)
Does this law have an exception for Georgia Weapons License holders if the dangerous thing in question is a firearm? (yes.)
Does an exception to this law exist for weapons that you disclose to the transportation company? (yes).
Is the definition of a "transportation terminal" very broad, such that it includes private package delivery services' facilities? (yes, see 16-12-122).
QUESTION: If you aren't a GWL holder, and you ship any firearm, even a sporting rifle or shotgun, through a commercial transportation facility WITHOUT telling them that there's a gun in the package, could you be in a hell of a lot of trouble due to your ignorance of this law? (yes).
Thankfully, most transportation workers and police are equally ignorant about the law.