Westley Richards Droplock double rifle in .500 Nitro Express with 26-inch barrels. The most powerful standard Droplock configuration, delivering 7,000 ft-lbf from a self-contained, field-serviceable action. Type: Rifle Action: Double Rifle Caliber: .500 Nitro Express Capacity: 2 Year introduced: 1897, UK Weight: 13 oz Overall length: 43" Status: Active Intended use: Dangerous Game, Safari