In “Easiness of Legal Access to Concealed Firearm Permits and Homicide Rates in the United States,” Siegel et al. (p. 1923) estimate the impact of right-tocarry (RTC) laws on murders over the period from 1991 to 2015. They advance the current literature in a number of ways and bring new data to bear on this important issue. Siegel et al. conclude that RTC laws lead to a substantial increase in murders, almost all of which come through increased firearms killings—specifically from handguns.