Mossberg 500A 12 Gauge Pump Action Shotgun

The Mossberg 500A is the 12-gauge designation of the iconic Mossberg 500 pump-action shotgun series. While it is fundamentally the same as a standard 12-gauge Mossberg 500, the "A" specifically signifies its chambering, distinguishing it from other models like the 20-gauge 500C or the .410 bore 500E.