Mossberg 500A 12 Gauge Pump-Action, 24 in Rifled Barrel with Rifle Sights, Tasco Pronghorn 2.5x32 Scope, Plus 28 in Modified & 30 in Full Vent-Rib Barrels
This Mossberg 500A stands out as a versatile, U.S.-made 12-gauge that comes configured with a 24-inch rifled barrel and rifle sights, and includes a Tasco Pronghorn 2.5x32 scope on a Weaver L1 side-mount. It also includes two additional vent-rib smoothbore barrels with Modified and Full chokes for flexible field use. Marked "Mossberg — Made in U.S.A. — North Haven, CONN." and chambered for 2.75- and 3-inch shells, it offers proven 500-series reliability with a configuration tailored for multiple roles.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Surfaces show noticeable scratches and blemishes. There are scattered dents and dings on the metal and wood.
What’s Included
- Optic: Tasco Pronghorn 2.5x32 scope (duplex reticle, Made in China)
- Optic Mount: Weaver L1 side-mount base
- Scope Rings: Scope rings mounted to Weaver base
- Barrel: 28" vent-rib smoothbore barrel, Modified choke
- Barrel: 30" vent-rib smoothbore barrel, Full choke
The shotgun is a Mossberg 500A pump-action in 12 gauge with chambers marked for 2.75-inch and 3-inch shells and a listed capacity of 2+1. The receiver is marked "Mossberg — Made in U.S.A. — North Haven, CONN." with "500A 12 GA" and features right-side ejection. The finish is blued/black over an aluminum receiver.
It is configured with a 24-inch barrel and rifle sights, combining a front ramp and an adjustable rear rifle sight for precise sight alignment. A Tasco Pronghorn 2.5x32 scope with a duplex reticle is installed on a Weaver L1 side-mount base with rings, adding a clear, low-power aiming option.
Two additional vent-rib smoothbore barrels are included: a 28-inch Modified and a 30-inch Full choke, expanding the shotgun’s utility across different shot sizes and distances. The magazine tube uses a knurled magazine cap with a barrel lug detent for secure barrel changes.
The stock set is hardwood with checkering and a pistol-grip profile, matched to a hardwood forend. A ventilated recoil pad and a 14.0-inch length of pull support comfortable handling. Controls include Mossberg’s tang safety for intuitive operation.
Built in North Haven, Connecticut, this 500A pairs the platform’s dependable action with a feature set aimed at adaptability, from rifled-barrel precision with rifle sights to smoothbore vent-rib options with Modified and Full chokes.




