Mossberg 500C Field/Security Combo 20 Gauge Pump-Action, 18.5 in Barrel, Extra 26 in Vent-Rib Accu-Choke Barrel, Blued, Synthetic Stock
This Mossberg 500C Field/Security Combo in 20 gauge pairs a compact 18.5-inch barrel with an extra 26-inch vent-rib barrel threaded for Accu-Choke, giving you two distinct configurations in one package. It is chambered for 2 3/4 and 3-inch shells, uses durable synthetic furniture, and features Mossberg's ambidextrous top-tang safety. The receiver carries the North Haven, Connecticut rollmark and is drilled and tapped with two plug screws in place.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Specific Condition Notes: Minor scratches and blemishes are present on external surfaces. The bolt face exhibits significant pitting.
What’s Included
- Mossberg 26 in. vent-rib Accu-Choke 20-ga barrel
- Owner's manual for Mossberg 500/835/590 pump-action shotguns
The 500C action incorporates dual extractors, twin action bars, an anti-jam elevator, and steel-to-steel lockup for consistent cycling. Ejection is to the right side. The receiver is aluminum alloy with a hard-coat anodized finish and shows the North Haven, Connecticut rollmark.
This combo includes an installed 18.5-inch steel barrel with a cylinder bore and a simple bead front sight. The quick-change barrel system, retained by the magazine cap, lets you swap to the included 26-inch vent-rib barrel that is threaded for Accu-Choke tubes.
Chambered for 2 3/4 and 3-inch 20-gauge shells, the stated capacity is 3+1. The receiver is drilled and tapped, with two plug screws visible.
The black synthetic stock and fore-end are built for durability and easy handling. A ventilated recoil pad and a 13.5-inch length of pull support comfortable mounting. The ambidextrous top-tang manual safety is accessible for both right- and left-handed users.

