The United States of America scores the highest in homicides by firearms. 270,000,000 civilian firearms - 88.8 for every 100 people. Ranked 1 in the world for civilian gun ownership. In the latest year, there were 9,146 homicides by firearm - 2.97 per 100,000 population. 60% of all homicides are by firearm.
SOURCE: CTS, via the UNODC and the Small Arms Survey.