Figures compiled by Geneva's Graduate Institute said the global civilian firearms stockpile had swelled from 650 million to 857 million between 2006 and 2017, accounting for 85 percent of all stocks.
Military arsenals held 133 million (13 percent) and law enforcement agencies 23 million (2 percent), raising the total to slightly more than one billion.
The US gun market had put 393 million firearms in the hands of Americans. who buy approximately 14 million new and imported guns every year
Americans own almost 40 percent of the global stockpile, although they make up only 4 percent of the world population, more than the combined 25 top-placed nations and territories.
Out of every 100 Americans there were on average 121 firearms. By comparison, Yemen had 53 per 100, and Montenegro and Serbia alike 39 firearms. Canada and Uruguay followed, each with 35 firearms per 100 residents. Japan and Indonesia ranked at the other end of the spectrum, with less than one firearm per 100 residents.
740,000 men, women, and children die each year as a result of armed violence. The majority of these deaths — 490,000 — occur in countries not directly affected by armed conflicts.