maybe a proposal like this could help prevent something in the future, where a person has to buy all new items. but what do you do about all the high capacity mags currently in circulation? confiscate them?
even under the assault weapons ban, it only banned the production of certain items, not the sale. you could still buy a "banned" item online or wherever.
still, evil in people is the problem, wouldn't everyone agree?
blaming inanimate objects is a mistake, especially when the vast majority of all gun owners are good citizens.