Mossberg 590S Shockwave 12 Gauge Pump-Action — 14.375 in Heavy-Walled CYL Bore, 1.75/2.75/3 in Chamber, Matte Black (MPN 51601)
The Mossberg 590S Shockwave stands out for its ability to cycle 1.75, 2.75, and 3 inch 12-gauge shells without adapters, paired with a compact 14.375 inch heavy-walled cylinder-bore barrel. This U.S.-made, matte black pump-action features a strapped corncob forend, raptor-style bird's-head grip, and a brass-bead front sight, with capacity varying by shell length up to 8+1.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent — clean, mirror finish; smoothbore.
Bore Rifling: Smoothbore — cylinder bore; no rifling present.
Specific Condition Notes: This firearm displays only light signs of wear and handling. Surface scratches are present in a few spots, including on the left side of the receiver. It remains clean overall.
What’s Included
- Mossberg 590S Shockwave 12 Gauge pump-action firearm (MPN 51601)
The 590S system allows direct use of 1.75, 2.75, and 3 inch shells with no adapters, giving the user flexibility in recoil, payload, and capacity. Depending on shell length, capacity varies up to 8+1, while the listed configuration is 4+1.
The 14.375 inch heavy-walled steel barrel is a smoothbore with a CYL (cylinder) choke, optimized for broad patterning. A brass-bead front sight provides a bright, simple aiming reference, and the matte black finish reduces glare.
The hard-anodized aluminum receiver is drilled and tapped, and the tang-mounted safety is intuitive and ambidextrous-friendly. A ribbed polymer corncob forend with a strap enhances control, and the raptor-style bird's-head polymer grip maintains a compact overall profile.
Durable materials are used throughout, including a steel barrel, aluminum receiver, and polymer furniture. Factory sling studs are installed for carry options. This model is part of the 590S Shockwave series and is made in the United States.