Mossberg 590 Shockwave 12 Gauge Pump-Action, 14.375 in Heavy-Wall Barrel, 3 in Chamber, Cylinder Bore
This Mossberg 590 Shockwave stands out with its 14.375 in heavy-walled, cylinder-bore barrel, compact 26.37 in overall length, and 3 in chamber. It is purpose-built with an extended magazine tube, aluminum alloy receiver drilled and tapped with factory plug screws, and duty-proven 590 internals including twin action bars and dual extractors. The configuration delivers robust construction and straightforward handling in a compact 12 gauge package.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Specific Condition Notes: There are markings consistent with previous handling and use. The bore is bright and clean. Refer to the photos for a closer look.
What's Included
- Mossberg 590 Shockwave 12 Gauge (Model 50659)
The Shockwave format combines a heavy-walled 14.375 in barrel with a cylinder bore and a 3 in chamber. Capacity is 4+1. A brass bead front sight offers a simple and durable sighting reference.
The barrel wears a matte blued finish, while the aluminum alloy receiver is matte black anodized and drilled and tapped with three factory plug screws. An extended magazine tube runs nearly to the muzzle, contributing to the compact 26.37 in overall length and approximately 5.25 lb weight.
Controls and furniture are set up for secure handling. The ribbed synthetic fore-end includes a webbing strap embroidered "MOSSBERG" to help manage recoil and slide operation. The bird's-head synthetic grip provides a low-profile hold, and a rear sling swivel stud is installed. The top-tang manual safety is easy to access.
Internals follow the proven 590 pattern with twin action bars, dual extractors, and an anti-jam elevator for reliable cycling. The cylinder bore and 3 in chamber support a wide range of 12 gauge loads without the need for choke changes.