Mossberg 590S Shockwave 12 Gauge 18.5″ Pump Shotgun

The Mossberg 590S Shockwave is a 12 Gauge pump-action platform with an 18.5-inch barrel and a 3-inch chamber designed to cycle 1.75", 2.75" and 3" shells. It combines a Raptor birdshead grip with a corncob forend and strap for secure handling. Controls are straightforward: an ambidextrous top-tang safety, tubular magazine, and a fixed cylinder bore choke with a front bead sight. The model is marketed for defensive and close-range applications and emphasizes short-shell compatibility and dependable cycling.

Key Specifications

• The firearm is chambered in 12 Gauge.
• The barrel measures 18.5 inches.
• The chamber is 3" and cycles 1.75", 2.75" and 3" shells.
• The action type is a pump action design.
• The installed choke is a fixed cylinder bore.
• The sighting system is a front bead.
• The stock is a Raptor birdshead grip with a corncob forend and strap.
• The barrel finish is matte blued.
• Safety is a top-tang ambidextrous design.
• The magazine is a fixed tubular magazine.

With short-shell flexibility, simple manual operation, and durable finishes, the 590S Shockwave is presented as a practical choice for users seeking a short-profile 12-gauge that emphasizes straightforward handling and reliable cycling. Its combination of a Raptor grip, corncob forend with strap, and fixed sights keeps the design focused on utility and durability in close-range scenarios.