Merkel 140-2.1 side-by-side double rifle in .500 Nitro Express with 26-inch barrels, among the most powerful dangerous-game doubles in regular production. Type: Rifle Action: Break action double Caliber: .500 Nitro Express Capacity: 2 Year introduced: 2002, Germany Weight: 136 oz Overall length: 43" Status: Active Intended use: Dangerous game / Elephant hunting