Mossberg 590 Shockwave LaserSaddle 20 Gauge Pump-Action, 14.375 in Heavy-Walled Barrel, Crimson Trace LS-250, 5-Round
This is the 20-gauge Mossberg 590 Shockwave LaserSaddle, factory model 50637. It pairs a heavy-walled 14.375 in cylinder-bore barrel and 5-round capacity with a factory-installed Crimson Trace LS-250 red laser. This example adds practical user-installed touches, including grip enhancements, a left-side elastic shell carrier, and a conical stand-off device.
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: The bore shows no inclusions. Wear and usage marks are present on the magazine tube from pump operation. Light scratches are visible on the exterior of the barrel. Scratches are present on the top of the Crimson Trace laser housing. Refer to pictures.
What’s Included
- Laser Sight: Crimson Trace Lasersaddle (red) receiver-mounted laser sight (installed)
- Shell Carrier: Elastic receiver-wrap shell carrier with D-ring (installed, left side)
- Stand-Off Device: Conical breacher/stand-off device at magazine cap (installed)
- Grip Enhancement: Adhesive grip tape on bird's-head grip with hook-and-loop patch on butt (installed)
The LaserSaddle configuration is factory-equipped with a Crimson Trace LS-250 red laser. It mounts over the receiver and provides multiple activation points, a master on/off switch, and user-adjustable windage and elevation for quick zeroing to the brass bead front sight.
The 14.375 in heavy-walled barrel uses a cylinder bore and is chambered for 2 3/4 in and 3 in shells. Capacity is 5 rounds, and overall length is 26.37 in. The matte black anodized aluminum receiver is drilled and tapped. Controls include a tang safety, and furniture consists of a synthetic bird's head (Raptor-style) grip and a ribbed synthetic corn-cob forend with strap.
Internals follow the 590-series pattern: dual extractors, non-binding twin action bars, positive steel-to-steel lock-up, and an anti-jam elevator. These components are designed to work together for smooth cycling with 20-gauge loads.
User-installed enhancements on this example include adhesive grip tape on the bird's-head grip with a hook-and-loop patch at the butt, a left-side elastic receiver-wrap shell carrier, and a conical stand-off/breacher device at the magazine cap. These additions complement the factory LaserSaddle for a ready-to-use defensive configuration.

