The 20-gauge Model 37 Featherlight is particularly prized for its low weight — the aluminum receiver and 20-gauge action combine to produce a sub-6-lb pump shotgun with full-size handling. The bottom-ejection design remains standard across all Model 37 variants. Type: Shotgun Action: Pump-Action Caliber: 20 Gauge Capacity: 4 Year introduced: 1937, USA Weight: 72 oz Overall length: 46" Status: Active Intended use: Hunting, Upland, Field