The Mossberg 590 Thunder Ranch is a special edition tactical pump-action shotgun featuring a Thunder Ranch logo, ghost ring sights, and military-spec components developed in collaboration with the Thunder Ranch shooting school. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 9 Year introduced: 2003, USA Weight: 64 oz Overall length: 41" Status: production Intended use: home-defense,tactical