Switzerland hasn't had a mass shooting since 2001. The country has about 2 million privately owned guns in a nation of 8.3 million people. In 2016, the country had 47 homicides with firearms. The country's overall murder rate is near zero. But the Swiss have some specific rules and regulations for gun use. Unlike the US, Switzerland has mandatory military service for men. All men between the ages of 18 and 34 deemed fit for service" are given a pistol or a rifle and trained. After they've finished their service, the men can typically buy and keep their service weapons, but they have to get a permit for them. In 2000, more than 25% of Swiss gun owners said they kept their weapon for military or police duty, while less than 5% of Americans said the same. In addition to the militia's arms, the country has about 2 million privately owned guns. Swiss authorities decide on a local level whether to give people gun permits. They also keep a log of everyone who owns a gun in their region. But cantonal police don't take their duty dolling out gun licenses lightly. They might consult a psychiatrist or talk with authorities in other cantons where a prospective gun buyer has lived before to vet the person. Some lawmakers in US states ... are considering a similar model. People who've been convicted of a crime or have an alcohol or drug addiction aren't allowed to buy guns in Switzerland. The law also states that anyone who "expresses a violent or dangerous attitude" won't be permitted to own a gun.