Firearms were associated with 30,136 deaths in the United States in 2003; of these, 11,920 were homicides. For every firearm homicide, there are four people who suffer non-fatal firearm assaults. Like many other consumer products in the US, most guns are initially sold to the public through a network of retail dealers. Persons in the business of selling firearms must obtain a federal firearm dealer's license. There were more than 54,000 federally licensed gun dealers in the United States in 2005, though this reflects a seventy-eight percent decline since 1994. Some states also require a state license to sell firearms.
Licensed firearm dealers are an important source of guns for criminals and gun traffickers. In one analysis of gun trafficking investigations conducted by the Bureau of Alcohol, Tobacco and Firearms (ATF), licensed dealers accounted for a plurality of all guns diverted to the illegal market.