The Model 59 was a radical departure for Winchester — its barrel was constructed from fiberglass filaments wound around a thin steel liner, reducing the barrel weight dramatically. The aluminum receiver and fiberglass barrel made it one of the lightest shotguns of its era. Type: Shotgun Action: Semi-Automatic Caliber: 12 Gauge Capacity: 4 Year introduced: 1959, USA Weight: 72 oz Overall length: 46" Status: Discontinued Intended use: Hunting, Collecting