I’ve recently read some people who wonder what the problem is with the reporting of multiple sales of gun (most recently in the news is talk about long guns–which is illegal).
It’s the same problem as with “one gun a month” and other schemes. The only way this can be enforced is if there is gun registration. Sure, an individual retailing could keep records of their customers and do a search for the last 5/30 days. Even looking past the chilling effect of having a time limit before you were enabled to exercise your specific enumerate right to keep and bear arms the problem to effectively enforce such a limit there would have to be a central list of the last time everyone purchased a gun to prevent someone from going to the gun store across the street, state, or country (yes, dual residents can purchase guns in two or states) to purchase another one before the “proper” time had expired.
Gun registration (and probably gun owner) registration is unlikely to pass muster in the courts and it certainly won’t pass muster with a very large percentage of the gun owning population. Just look at what happened in Canada with their gun registration—Then crank the dial on that reaction to about “12”.