Quoted:
You must have a firearm shipped to an FFL. It is against the law for a person to ship a firearm to another person! When I sell a gun on line,I take it to my dealer,pay him $25 (which I charge to the buyer) and he packs it up and ships it-Easy and hassle free! The ONLY way a person can privatly ship a gun is to the MANUFACTURER for service,and they can ship it back to the owner,otherwisa all mail gun sales MUST go through an FFL.

(B8) May a nonlicensee ship a firearm through the U. S. Postal Service? [Back]


A nonlicensee may mail a shotgun or rifle to a resident of his or her own state or to a licensee in any state. Handguns are not mailable. A common or contract carrier must be used to ship a handgun. A nonlicensee may not transfer any firearm to a nonlicensed resident of another state. The Postal Service recommends that longguns be sent by registered mail and that no marking of any kind which would indicate the nature of the contents be placed on the outside of any parcel containing firearms.

(B9) May a nonlicensee ship a firearm by carrier? [Back]


A nonlicensee may ship a firearm by carrier to a resident of his or her own state or to a licensee in any state. A common or contract carrier must be
used to ship a handgun. In addition, Federal law requires that the carrier be notified that the shipment contains a firearm and prohibits common or contract
carriers from requiring or causing any label to be placed on any package indicating that it contains a firearm. [18 U. S. C. 922( a)( 2)( A) and 922( e), 27 CFR 178.31]

Quoted:
 I'm not talking about buisnesses, I'm talking about individual sales.  You don't need any paperwork when selling a gun at a gunshow, and selling over the internet is just a private sale just like a gunshow, right?