Mossberg 590 Shockwave 20 Gauge Pump-Action Shotgun, 14" Heavy-Wall Barrel, Matte Blued
The Mossberg 590 Shockwave in 20 gauge condenses the proven 590 action into a compact 26.37-inch package that remains NFA-compliant. Its 14-inch heavy-walled barrel, bird’s-head grip, and 5+1 capacity deliver maneuverability without sacrificing firepower. Made in the USA and equipped with an ambidextrous top-tang safety, this Shockwave offers reliable pump-action performance in a lightweight 4.95-pound platform.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Specific Condition Notes: Minor scratching, scuffing, and blemishing are present on exterior surfaces.
What’s Included
- Mossberg 590 Shockwave 20 Gauge pump-action shotgun (Model 50657)
The 590 Shockwave’s heavy-walled, cylinder-bore barrel is built from steel for durability and consistent patterning with 2¾- or 3-inch shells. A brass bead front sight provides a quick, intuitive aiming point.
Its matte blued finish on the barrel and matte black anodized aluminum receiver resist glare and corrosion, while the polymer bird’s-head grip and corn-cob forend keep weight low and handling secure.
The drilled and tapped receiver arrives with four filler screws, giving owners an out-of-the-box option to add optics or accessory rails. Dual sling-swivel studs at the grip heel and magazine cap support a variety of carry methods.
Dual action bars ensure smooth, reliable cycling, and the clean-out magazine-tube cap simplifies maintenance. With a 5+1 tubular magazine and a 3-inch chamber, the Shockwave is ready for a wide range of defensive or field loads.