In 2018, the Small Arms Survey reported that there are over one billion small arms distributed globally, of which 857 million are in civilian hands. The survey stated that American civilians account for an estimated 393 million of the worldwide total of civilian held firearms, or about 120.5 firearms for every 100 American residents.

The Small Arms Survey (SAS) is an independent research project located at the Graduate Institute of International and Development Studies in Geneva, Switzerland. It provides information on all aspects of small arms and armed violence, as a resource for governments, policy-makers, researchers, and activists, as well as research on small arms issues.