The Ithaca Model 37 Military is the WWII-era trench gun variant of the Model 37, featuring a 20-inch cylinder-bore barrel, military-specification parkerized finish, and a bayonet lug for the M1917 bayonet. Used by U.S. forces in World War II and Korea. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 5 Year introduced: 1941, USA Weight: 6.5 oz Overall length: 40.5" Status: Discontinued Military use: Yes Intended use: Military/Historical