The massive Colt-Walker, co-designed with Capt. Samuel Walker. Arguably the most powerful black-powder revolver ever made at 9 lbs loaded. Type: Revolver Action: Single-Action Caliber: .44 Percussion Capacity: 6 Year introduced: 1847, USA Weight: 73 oz Overall length: 15.5" Status: Discontinued Military use: Yes Intended use: Collector, Military