Marines operating an M2 Browning machine gun mounted on a tripod at Khe Sanh Combat Base, Vietnam. (Bettmann Archive/Getty Images) For over a century the M2 Browning .50-caliber machine gun, known ...

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Few weapons have defined the tempo of modern warfare quite like the machine gun. It isn’t a new concept by any means, with the notion of rapid fire volleys being something dating back to the Age of ...