Merkel B3 over-under double rifle in .470 Nitro Express with 23.6-inch barrels, extending the entry-level B3 platform to one of the most proven stopping-rifle cartridges for dangerous game. Type: Rifle Action: Break action double Caliber: .470 Nitro Express Capacity: 2 Year introduced: 2012, Germany Weight: 122 oz Overall length: 40.5" Status: Active Intended use: Dangerous game / Buffalo and elephant