For the first half of the 20th century, one of the most important firearms in the U.S. military arsenal was the water-cooled ...

— -- Half of the 23-gun arsenal discovered inside Stephen Paddock's 32nd floor room at the Mandalay Bay Resort & Casino were rigged with bump stocks, devices that modify rifles to fire faster, ...

The Five Best US Machine Guns Ever Produced: The United States military has produced some incredible machine guns throughout history, but worldwide, the machine gun has changed warfare forever.

FILE - A finger points to a pin of an M-16 that makes it a fully automatic machine gun receiver, in a row of AR-15 style rifles at the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) ...

The FBI says machine gun conversion devices, or switches, are on the rise in Wisconsin – and becoming part of daily investigations. A switch is an illegal device that can turn a regular semi-automatic ...

ST PAUL, Minn. — Minnesota Attorney General Keith Ellison is suing gun manufacturer Glock, Inc., claiming the company has known for decades how easily its semi-automatic handguns could be converted to ...