Mossberg 500A 12 Gauge Pump-Action, 20 in Fixed Cyl Bore, 6+1, 3 in Chamber, Wood Furniture
This Mossberg 500A is a North Haven, Connecticut-marked 12 gauge pump-action with a 20-inch fixed Cyl Bore barrel and a 3 inch chamber. It features a 6+1 capacity with a tubular magazine that extends nearly to the muzzle, an ambidextrous top-tang safety, and dual action bars. Classic wood furniture with a corncob fore-end, a straight-comb stock, and a ventilated rubber recoil pad complete a practical, proven configuration.
The receiver is alloy with a black finish, paired with a blued barrel and magazine tube. A plain brass bead front sight, right-side ejection/loading port, and a 14-inch length of pull provide a straightforward, dependable setup. Barrel compatibility on this configuration is limited to Mossberg 500 8-shot barrels that use a muzzle-ring retained at the magazine cap; standard short-tube field barrels are not directly compatible without replacing the magazine tube.
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: There are markings from prior handling and use. The bore is bright and clean. Please refer to the photos for a complete view of the condition.
What’s Included
- Mossberg Model 500A 12 Gauge pump-action shotgun with 20-inch fixed Cyl Bore barrel
The 20-inch fixed Cyl Bore (cylinder bore) barrel delivers a clean, open pattern and uses a plain brass bead front sight. The 3 inch chamber accepts both 2.75 inch and 3 inch 12 gauge shells, giving straightforward load flexibility without changing parts.
The 6+1 capacity comes from a tubular magazine that runs nearly to the muzzle and ends with a knurled cap. Dual action bars and right-side ejection/loading provide smooth cycling and efficient handling. The ambidextrous top-tang safety is easy to access from either side.
Construction details include a black-finished alloy receiver matched to a blued barrel and magazine tube. The receiver is marked North Haven, Connecticut with a clear 500A 12 GA designation. On this configuration, barrel compatibility is limited to Mossberg 500 8-shot/one-piece full-length magazine-tube barrels with a muzzle-ring at the magazine cap; standard short-tube field barrels will not fit without replacing the magazine tube.
Wood furniture includes a classic corncob fore-end and a straight-comb stock with a ventilated rubber recoil pad and a rear sling swivel stud. Length of pull is 14 inches, offering a familiar fit for many shooters.