The Ithaca Model 37 in 20 gauge is a lighter version of the iconic bottom-ejecting pump-action, popular for upland hunting where a lighter gun is preferred for long days in the field. Type: Shotgun Action: Pump-Action Caliber: 20 Gauge Capacity: 5 Year introduced: 1937, USA Weight: 48 oz Overall length: 45" Status: production Intended use: hunting