By federal law, every firearm produced by American gun manufacturers must bear a serial number. Each firearm imported must also bear a serial number. Domestic production totals, imports and exports must be reported annually to the Bureau of Alcohol, Firearms and Tobacco. The trade publication Shooting Industry also publishes annually, based on BATF-provided data, the number of firearms produced over a running 20 year period. These data include BATF totals by handgun type (revolvers and pistols) and by caliber. They enable an objective basis for evaluating market trends and for estimating and updating the number of civilian-owned guns. Using BATF figures to establish a 1945 baseline, Gary Kleck has developed a production-based model that cumulates annual domestic production, adds imports and subtracts exports. From 1945–1994, the American civilian gun total rose from an estimated 46,909,183 guns to an estimated 235,604,001 guns, an increase of 502.25%. Over that period, the number of privately-owned handguns increased from an estimated 12,657,618 to an estimated 84,665,690, a gain of 668.9%. From 1945–1994, Americans bought handguns at a higher rate than they bought long guns. The whole-period handgun growth rate was 151% of the whole period long gun growth rate (a total handgun increase of 668.9% vs. a total long gun increase of 440.7%).Between 1993–1999 the industry produced approximately 28.6 million firearms, including 12.5 million handguns. Allowing for imports and subtracting for exports, we may reasonably estimate that the current gun total approximates the size of the U.S. population, including approximately 95–100 million handguns. Figured on a per capita basis, American civilians probably own guns at a rate between 969 and 1016 per 1,000 adults, including a rate between 365 and 388 handguns per 1000 adults.
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