Mossberg 590 Shockwave 12 Gauge Pump-Action, 14.5 in Barrel, Matte Black, 5+1, Brass Bead Sight
The Mossberg 590 Shockwave (SKU 50659) is a compact 12-gauge pump-action built around a heavy-walled, fixed cylinder-bore barrel and rugged furniture. It features the signature Raptor bird's-head grip, a ribbed corncob fore-end with a nylon strap embroidered "Mossberg," and an ambidextrous tang safety. The receiver is drilled and tapped with four filler screws, and the gun is finished in matte black and made in the United States.
Chambered for both 2 3/4 in and 3 in shells with a 5+1 capacity, this configuration aligns with the base 12-gauge Shockwave specification. A brass bead front sight provides a straightforward sight picture, and the forward sling-swivel stud is mounted in the fore-end strap clamp/barrel–magazine tube bracket just behind the magazine cap (the magazine cap itself is smooth and does not incorporate a stud or QD socket). Identification matches the base Shockwave SKU 50659.
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: There are notable scratches and blemishes, including scratches toward the muzzle. Small deposits of pitting are present.
What’s Included
- No box or case is included.
The heavy-walled fixed cylinder-bore barrel measures 14.375 in and is built for durability. The 12-gauge chambering accepts 2 3/4 in and 3 in shells, with a 5+1 capacity as listed for this model.
The furniture is purpose-built: a black synthetic Raptor bird's-head grip and a ribbed corncob fore-end with a nylon strap embroidered "Mossberg" for secure purchase during cycling. The forward sling-swivel stud is mounted in the fore-end strap clamp/barrel–magazine tube bracket just behind the magazine cap.
The receiver comes drilled and tapped at the top and is fitted with four filler screws. A brass bead front sight provides a simple, reliable aiming reference.
Finished in matte black, this Shockwave is the U.S.-made 590 variant identified by Mossberg mfg part number 50659. Identification matches the base 12-gauge Shockwave SKU 50659.

