The BU9 Nano is the same pistol as the standard Beretta Nano; BU9 is the internal model designation used in some markets and on certain documentation. Same serialized sub-chassis, same trigger, same specifications. Type: Pistol Action: Semi-Automatic Caliber: 9mm Capacity: 6 Year introduced: 2012, Italy Weight: 17.7 oz Overall length: 5.63" Status: Discontinued Intended use: Concealed Carry, Personal Defense