The Mossberg 590S is an updated 590 platform capable of chambering and cycling mini-shells (1-3/4-inch), standard 2-3/4-inch, and 3-inch shells interchangeably using an elevator mechanism. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 9 Year introduced: 2020, USA Weight: 64 oz Overall length: 41" Status: production Intended use: home-defense,tactical