The heavier-caliber sibling of the Lightning, chambered in 41 Colt. Doc Holliday is documented to have carried a Thunderer, further cementing the Tombstone legend of this revolver. Type: Revolver Action: Double-Action Caliber: 41 Colt Capacity: 6 Year introduced: 1877, USA Weight: 24 oz Overall length: 9.5" Status: Discontinued Intended use: Law Enforcement, Self-Defense