The Bureau of Alcohol, Tobacco, and Firearms released the 2015 Firearms Commerce update. It showed firearm sales nearly doubled between 2010 and 2013. . . The ATF said 5.5 million firearms were manufactured in 2010. By 2013, that number was almost twice as much, with close to 11 million guns produced nationwide. Dury's Gun Shop owner John Dury said politics explains the boost.