President Donald Trump's administration agreed to permit the sale and possession of devices that let gun enthusiasts convert semiautomatic rifles into weapons that can shoot as fast as machine guns.

Scientists have unveiled the world's fastest computer in California that will be used to secure America's nuclear weapons stockpile. The $600 million exascale supercomputer, called 'El Capitan,' is ...

Sgt. Trever Linberg, a helicopter repairman with 10th Mountain Division, tests the new XM152 mounted machine gun optic on the Mark 19 40mm grenade machine gun. (Sgt. Matthew Connor/Army) Soldiers with ...

The U.S. Army's newest automatic weapon is getting a workout alongside Filipino forces in the Philippines, according to the 25th Infantry Division. Photographs released by the Defense Department last ...