The Cimarron Firearms 1866 Yellowboy is a usa-made lever-action rifle chambered in 44-40 Winchester, introduced in 1984. Primary use: Cowboy Action, Collecting. Type: Rifle Action: Lever-Action Caliber: 44-40 Winchester Capacity: 13 Year introduced: 1984, USA Weight: 80 oz Overall length: 43" Status: Active Intended use: Cowboy Action, Collecting