Exactly. Registries are actually counterproductive, as in the case of Canada's. But sorry for missing your earlier question, but when you fill out the Form 4473, you, in a sense, are registering it. The difference between the U.S. system and full-blown registries is that the 4473 is kept by the gun dealer until he goes out of business, in which case it goes to the feds. Therefore, it links the gun, you, and the dealer. PA also maintains a registry, in violation of Pennsylvania State and Federal law.