You don't. I don't think you can actively reverse it. But gun ownership is steadily declining, with the numbers mostly propped-up by marketing them to women, or selling one person more guns than he could ever shoot. Also, the population is aging, so crime should trend down. Hunting is falling out of favor as a sport, as well. I think a lot of the guns will just decay from disuse or be given up to buy-backs, when people find one in their deceased uncle's belongings. The push for gun culture is mostly a marketing campaign by the manufacturers and I think their local, civilian market is going to shrink and their foreign, military market is going to grow. You can make a lot more money selling rifles and amunition to the Danish or Japanese armies than to Joe Sixpack. Americans were being encouraged to buy so many guns because _someone_ needed to buy one.