U.S. citizens own 270 million of the world’s 875 million known firearms … (and) about 4.5 million of the 8 million new guns manufactured worldwide each year are purchased in the United States.
India had the world’s second-largest civilian gun arsenal, with an estimated 46 million firearms outside law enforcement and the military, though this represented just four guns per 100 people there. China, ranked third with 40 million privately held guns, had three firearms per 100 people.
… On a per-capita basis, Yemen came second behind the U.S., with 61 guns per 100 people, followed by Finland with 56, Switzerland with 46, Iraq with 39 and Serbia with 38.
France, Canada, Sweden, Austria and Germany were next, each with about 30 guns per 100 people, while many poorer countries often associated with violence ranked much lower. Nigeria, for instance, had just one gun per 100 people.