https://www.businessinsider.com/gun-control-how-japan-has-almost-completely-eliminated-gun-deaths-2017-10
Japan is a country of 127 million people and yearly gun deaths rarely totaling more than 10
If Japanese people want to own a gun, they must attend an all-day class, pass a written test, and achieve at least 95% accuracy during a shooting-range test. Then they have to pass a mental-health evaluation, which takes place at a hospital, and pass a background check, in which the government digs into their criminal record and interviews friends and family. They can only buy shotguns and air rifles — no handguns — and every three years they must retake the class and initial exam.
Japan has also embraced the idea that fewer guns in circulation will result in fewer deaths. Each prefecture — which ranges in size from half a million people to 12 million, in Tokyo — can operate a maximum of three gun shops; new magazines can only be purchased by trading in empty ones; and when gun owners die, their relatives must surrender the deceased member's firearms.