► The earliest guns were believed to be constructed in China and in Northern Africa in 1250.
► The smallest working revolver is the C1ST, manufactured by SwissMiniGun of Switzerland. It is 2.2 inches long and weighs less than an ounce.
► The largest working rifle is “Big Ernie.” It’s over 33 feet long. It belongs to James A. DeCaine of Ishpeming, Mich., and is mounted on the back of a flatbed truck.
► Richard Gatling is credited with inventing the first multiple-barrel machine gun in 1862. It was hand-cranked.
► Sir Hiram Maxim demonstrated his self-powered machine gun for the first time in 1884.
SOURCE: Guinness World Records
SOURCES: US Bureau of Alcohol, Tobacco, Firearms and Explosives; December 2012 Gallup poll; National Rifle Association of America; Guinness World Records