You're misreading the law. If your transaction takes place via a FFL then you have to fill out the 4473. The 4473 is then placed on file in the gun store's records where they stay for 15 years, then destroyed. The exception is if the gun store goes out of business. Then the gun store turns the 4473 forms over to the ATF.
But federal law still forbids the federal government from accessing those 4473s as any form of "registration."
And the state of Kentucky has no laws requiring you to "register" your firearms. There is no "registration" of firearms in Kentucky.
Now, if you buy a machine gun, that's different. But very few gun owners, comparatively speaking, own machine guns. We can thank (or curse) Ronald Reagan for that. Buying a machine gun definitely requires registering the gun. And the feds also closely monitor the gun owner's activities where tthe machine gun is concerned. But that's a whole different discussion.
You apparantly don't buy and/or sell many guns, do you?
You apparantly don’t buy and/or sell many guns, do you?