Mossberg 500C 20 Gauge Pump-Action with 24" Rifled Ported Slug Barrel, 2.5x20 Scope, 28" Ported Accu-Choke Spare Barrel, 3" Chamber
This Mossberg 500C 20 gauge is configured as a dedicated slug gun with a 24-inch fully rifled, ported barrel and a fixed 2.5x20 scope on a receiver saddle mount. It includes a 28-inch ported vent-rib spare barrel threaded for Mossberg Accu-Choke tubes and fitted with an Improved Cylinder choke, giving you a ready-to-use setup for both slugs and shot. The gun accepts 2 3/4- and 3-inch shells, and features a hardwood stock with a cheek-riser pad for a consistent sight picture through the optic.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Fouling: Moderate Fouling - Lead or copper fouling with noticeable buildup.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: There are markings from previous handling and use. The bore of the installed rifled barrel shows fouling. The spare 28-inch barrel has rust on the exterior, but its bore is clean. Refer to pictures.
What’s Included
- Owner's manual
- Mossberg 20 ga 28 in Accu-Choke vent-rib spare barrel, ported
- Fixed 2.5x20 scope (duplex reticle)
- Scope rings (installed)
- Receiver saddle-style scope rail (installed)
- Brown web sling with quick-detach swivels
- Add-on cheek-riser pad on stock (installed)
The shotgun is set up with a 24-inch fully rifled, ported slug barrel and no open sights; aiming is through the fixed 2.5x20 scope mounted on a receiver saddle rail with installed rings. The chamber accepts both 2 3/4- and 3-inch 20-gauge shells. Capacity is listed as 2+1.
A 28-inch spare barrel is included. It is vent-ribbed, ported, threaded for Mossberg Accu-Choke tubes, and comes fitted with an Improved Cylinder choke. This spare barrel carries a front bead sight on the rib.
The receiver is aluminum alloy with an anodized finish, paired with a steel barrel. The hardwood stock features pressed checkering and a ventilated recoil pad, with a listed length of pull of 14.0 inches. An add-on cheek-riser pad is installed to align the eye to the scope, and a brown web sling with QD swivels is attached. Made in the United States.
Notable Mossberg 500 action features include twin action bars, dual extractors, an anti-jam elevator, and steel-to-steel lockup. The shotgun uses a top-tang safety and a pump-action system for operation.

