Most people who attempt suicide do not die—unless they use a gun. Across all suicide attempts without a gun, 4% result in death. But when a gun is involved, that figure skyrockets to 90%. That second chance matters: the vast majority of people who survive a suicide attempt do not go on to die from a later attempt. The research shows that the difference between living to see a better day or dying by suicide is often determined by the presence of a gun. Given the unique lethality of firearms as a means of suicide, addressing gun suicide is an essential element of any strategy to reduce gun violence in this country.