Additionally, the annual statistical report from the federal Bureau of Alcohol, Tobacco, Firearms and Explosives, suggest that in 2010 more than 5.4 million firearms were manufactured in the United States. In the last two decades, from 1990 to 2010, an average of 4 million firearms were made in the United States every year. That means that no other country can come close to matching that arsenal — or the carnage that comes with it.