japan doesn't even have an outright ban, either. as i understand it, you just have to take a day-long class and pass safety/common sense tests as well as a psychological evaluation so you can get a permit to buy a hunting rifle or air gun.
In Japan, small caliber rifles have been illegal for decades. Shotguns are currently the only class of firearm legally obtainable. Firearms may not be purchased for private collection; a legitimate reason such as profession or sport is required for possession.
Neigbhorhood police stations will regularly schedule visits to check firearm licenses. It is a requirement to inform the police where a firearm will be stored. While in storage, a firearm must be kept in a locked safe and ammunition in a separate and locked container.
Firearms have been regulated in Japan for hundreds of years. They were never deeply ingrained into Japanese society. I've always felt that comparing Japan's success with gun control to the United States is like comparing apples to oranges.