Mossberg 590 12 Gauge Pump-Action, 20.5 in Barrel, 6+1, Magpul SGA Stock & MOE Forend, Bushnell Red Dot, Inforce Light, Optic Rail with 6-Shell Saddle
This Mossberg 590 stands out as a well-equipped 12 gauge defensive shotgun with useful, purpose-driven upgrades. It features a 20.5 inch cylinder bore barrel, a full-length 6+1 tubular magazine, and a matte-finished aluminum receiver with Mossberg's tang safety. Notable additions include a receiver-top Picatinny optic rail with an integrated 6-shell saddle, a Bushnell red dot, Magpul SGA stock and MOE forend, and an Inforce weapon light. It retains classic 590 hardware including a bayonet-lug assembly, knurled clean-out magazine cap, and a protected front sight.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Smoothbore cylinder - no rifling present.
Specific Condition Details: There are minimal markings from previous handling and use. The bore appears bright and clean. Please refer to the photos.
What's Included
- Bushnell red dot optic (installed)
- Inforce weapon light (installed on forend)
- Receiver-top Picatinny rail with integrated 6-shell sidesaddle (installed)
- Magpul SGA 500 fixed stock (installed)
- Magpul MOE forend (installed)
The 590 platform here is a 12 gauge pump-action configured with a 20.5 inch cylinder bore barrel and a full-length tubular magazine that yields a 6+1 capacity. The receiver is aluminum with a matte finish and uses Mossberg's tang safety. Chambering supports both 2.75 in and 3 in shells.
Factory-style hardware includes a bayonet-lug assembly at the barrel and magazine clamp, a knurled clean-out magazine cap, and a front sling swivel. Sight reference at the muzzle is a tall, protected blade on a ramped base.
Ergonomics and handling are enhanced with a Magpul SGA 500 fixed stock and Magpul MOE forend. The SGA stock features a spacer-based length-of-pull system and a built-in sling slot, while the MOE forend provides a durable, streamlined gripping surface. Both components are polymer and installed.
On top, a receiver-mounted Picatinny optic rail integrates a 6-shell saddle, combining an Optic Rail and Shell Saddle into a single unit. The installed Bushnell red dot provides a clear aiming solution, and the Inforce weapon light mounted on the forend adds low-light capability.