The Clark Custom .460 Rowland conversion upgrades a standard Government-model 1911 to .460 Rowland, a cartridge designed by Johnny Ray Rowland to deliver .44 Magnum energy levels from a semi-automatic pistol. The conversion includes a compensated barrel and heavy recoil spring. Type: Semi-Automatic Pistol Action: Single-Action Caliber: .460 Rowland Capacity: 8 Year introduced: 1997, USA Weight: 39 oz Overall length: 8.5" Status: Active Intended use: hunting, sport, self_defense