The 16 GA Ithaca Model 37 Featherlight occupies the sweet spot between 12 and 20 gauge, and the Model 37 is one of the few modern pump guns still offered in 16 GA. Type: Pump-Action Shotgun Action: Pump-Action Caliber: 16 GA Capacity: 4 Year introduced: 1937, USA Weight: 6.25 oz Overall length: 46.5" Status: Active Intended use: Hunting, Field