A one-handgun a month law is a law which limit handgun purchases to one per 30-days, for an individual. Proponents support such laws in the effort to keep criminals, or would be criminals from amassing large numbers of handguns in a short period of time. Supporters argue that gun traffickers frequently purchase large numbers of cheap handguns from states which lack such laws, particularly those in the south, in order to transport and sell them within states with such laws.
The first law of such nature was passed in 1975 in the state of South Carolina (which has since repealed the law). The policy gained some further recognition, after the state of Virginia enacted similar legislation in 1993 (which has since greatly amended the law to allow for individual multiple purchase instances[1]), in effort to reduce gun trafficking into the Northeast. At the time, 40% of the guns used in crime in New York City were reported to have been traced back to the state of Virginia.[2]