Mossberg 500A 12ga

Updated August 24, 2026

This Mossberg Model 500A pump-action shotgun is chambered in 12 gauge and features an approximately 21" barrel with a shiny bore. Serial number P377602, this example is in fair overall condition and has been outfitted with a DLG-style forend, giving the classic Mossberg pump shotgun a more modern tactical appearance. A fiber-optic front sight provides a bright sighting reference, while a Picatinny rail is installed on the shotgun. The rail is not mounted securely and will need attention before accessories should be attached to it. Visible rust is also present, and bidders should review the photographs carefully for exact condition. The Mossberg 500 has been one of America’s most recognizable pump-action shotgun families for decades, serving sporting, defensive, and law-enforcement roles. With its 21" barrel, upgraded forend, fiber-optic sight, and shiny bore, this example offers an interesting customized Mossberg with some cosmetic and accessory-mounting issues to address. Please see photos. Mossberg 500A 12ga Pump 21 Shiny P377602 Fair

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