For what it is worth there have been quite a few complete firearms sold on ebay in one fashion or another. Ebay depends on other sellers to rat out those peddling complete firearms and/or receivers and quite a few slip through. There was a guy who sold a couple of complete pistols simply by taking them apart and selling them as "parts." On the other hand they took down my listing for a 10-X rifleman's shooting glove one time because someone complained. Go figure.