Just look at how well the multi billion gun registration system worked in Canada before they finally scrapped it. I firmly believe that even less responsible Americans would comply with such a system here and it would be doomed to failure.
Two States that now have "assault rifle" registration requirements NY and Conn. are seeing less then 10% compliance.
I can only think of the failure of "Prohibition" to come up with a parallel in non-compliance to a gun registration requirement.
I also firmly believe that we as responsible Americans are becoming more and more disgusted with a Federal government that's clearly out of control.
Jim