Conservatives incorrectly argue that more guns do not lead to more deaths; some go so far as to claim that there's an inverse correlation. The graphs and data they use to support this view are flawed in several important ways.
Countries and states with higher levels of gun ownership have more gun homicides, suicides and accidental killings. People with guns in the home are much more likely to die from guns than those without—and you're much more likely to use your gun to commit homicide or suicide than to use it in a defensive, justified killing. An overall cost-benefit analysis of the question shows that people are much more likely to be harmed by guns than they are to benefit from them.