The pump-action shotgun issued to US troops in both World Wars, fitted with a heat shield and bayonet lug for trench warfare. The most famous military shotgun in American service, known for its devastating close-range effect. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 6 Year introduced: 1918, USA Weight: 230.4 oz Overall length: 38.5" Status: Discontinued Military use: Yes Intended use: Trench Warfare, Close Quarters, Military