The Browning M2 .50 Caliber Machine Gun, Heavy barrel is an automatic, recoil operated, air-cooled machine gun with adjustable headspace and is crew transportable with limited amounts of ...

The B-17G variation that saw service in the tail end of World War II was armed like no other aircraft before it, with up to a “lucky thirteen” M2 .50 caliber (12.7 mm) machine guns placed in ...

The M2 .50-caliber machine gun could reach farther, up to 2,000 meters, but weighs 84 pounds. Weapons and ammunition experts in the Army, Marine Corps and other government groups began evaluating ...