The raw data of the FBI Uniform Crime Statistics cannot be used to make refined conclusions about the relationship between the extent of firearm ownership and the incidence of homicides, accidental deaths, and aggravated assaults. However, the research does suggest some possibility of reducing firearm deaths and injuries through less firearm availability. Because of the present high level of gun ownership, an active resale market, and the ease of carrying guns across State lines, it may be helpful to examine European countries with gun control legislation to identify cultural and 'marketplace' factors affecting gun ownership and use. While the second and fifth amendments pose little obstacle to gun control legislation, the fourth amendment, restricting searches and seizures, could be a serious barrier to enforcing a registration or confiscation program. Additional research is needed in buy-back programs; the substitution argument; public education; and psychological issues, such as fear and cultural influences. A total of 30 footnotes is provided.