U.S.A. -(Ammoland.com)- The AMA published a study of the effects of “Mass Shootings” on gun sales. The authors found gun sales were about as likely to decrease as to increase after the events.
Instead of the traditional FBI definition of a mass murder as killing four or more people in a single incident, not including themselves, the study published by the AMA uses the more wide ranging “Mass Shooting”, which they define as an incident in which 5 or more people are injured or killed. Not surprisingly, this increased the number of incidents substantially. The researchers found 124 incidents from November 1998 to April, 2016. That is the period the National Instant Background Check System (NICS) has been in effect.
Here are the results, as published. From jamanetwork.com: