Mossberg 590S 12 Gauge 20″ M-LOK Pump Shotgun

The Mossberg 590S is a 12-gauge pump-action shotgun configured with a 20-inch barrel and M-LOK compatible forend for modular accessory mounting. It features a 3-inch chamber and is designed to cycle 1.75-inch short shells, 2.75-inch, and 3-inch shells. Standard equipment includes ghost ring sights and a black synthetic stock for duty- and hard-use reliability.

Key Specifications

• The gauge is 12 Gauge.
• The barrel measures 20 inches.
• The action is Pump Action.
• The chamber accepts 1.75 in, 2.75 in, and 3 in shells (3 in max).
• The forend is M-LOK compatible for accessory attachment.
• The stock material is black synthetic.
• The sighting system consists of ghost ring sights.
• The installed choke is cylinder bore (Accu-Choke).
• The model is 590S from Mossberg.
• The manual safety is a top tang ambidextrous safety.

Built as a rugged, service-oriented platform, the 590S pairs a short 20-inch barrel with an M-LOK forend and dependable ghost ring sights for quick, practical handling in range, duty, or home-defensive contexts. Its synthetic furniture and proven pump-action design prioritize durability and straightforward operation for users who want a reliable, no-nonsense shotgun platform.