The iconic American heavy machine gun that entered WWII service and remains in active production today — the longest-serving firearm in US military history. Devastatingly effective against aircraft, light vehicles, and infantry. Type: Machine Gun Action: Automatic Caliber: .50 BMG Capacity: 110 Year introduced: 1933, USA Weight: 1680 oz Overall length: 65.1" Status: Active Military use: Yes Intended use: Anti-Aircraft, Vehicle, Support, Military