Navy Arms reproduction of the Winchester 1866, the first Winchester-manufactured lever-action. Brass receiver gave it the Yellow Boy nickname. The 1866 added a wooden forestock and King's loading gate to the Henry design. Type: Lever-Action Action: Lever-Action Caliber: .44-40 WCF Capacity: 13 Year introduced: 1866, USA Weight: 96 oz Overall length: 43" Status: Active Intended use: Collector, Reenactment, Cowboy Action Shooting