Six-inch barrel version of the Mateba autorevolver. The longer barrel adds velocity and provides a more distinctive profile. The Model 6 Unica name refers to the unique automatic cylinder rotation mechanism. An engineering curiosity of the highest order. Type: Revolver Action: Semi-Automatic Caliber: .357 Magnum Capacity: 6 Year introduced: 1997, Italy Weight: 50 oz Overall length: 12.5" Status: Discontinued Intended use: Collecting, Sport