Mossberg 940 Pro Thunder Ranch 12ga 18.5in Patriot Brown

The Mossberg 940 Pro Thunder Ranch is a purpose-built semi-automatic 12 gauge shotgun designed with input from Thunder Ranch. It ships optic-ready with patent-pending receiver cuts that accept low-profile Shield RMSc-pattern micro red dot sights and includes adapter plates for additional footprints. The shotgun pairs a Cerakote Patriot Brown finish with a tactical synthetic stock and an M-LOK-equipped forend for modern accessory compatibility.

Key Specifications

• The gauge is 12 Gauge.
• The action is Semi-Auto.
• The barrel measures 18.5 inches.
• The chamber accepts 3 inch shells.
• The finish is Cerakote Patriot Brown.
• The receiver is Optic-Ready (Shield RMSc footprint) and is drilled and tapped.
• The forend features an integrated heat shield, M-LOK accessory slots, and QD ports.
• The stock has an adjustable length of pull (12.5–14.25 inches) and QD sling ports.
• The installed choke is Cylinder Bore (Accu-Choke system).

Thoughtful ergonomics and practical features make the 940 Pro Thunder Ranch well-suited for range use and security applications. Its optic-ready receiver, M-LOK forend, and adjustable stock offer a modern platform for shooters who value modularity and straightforward performance in a durable, weather-resistant finish.