Mossberg 940 JM Pro 12GA 24in Optic-Ready 9+1

About this product

The Mossberg 940 JM Pro is a competition-grade, semi-automatic 12-gauge designed for speed and reliability in sport shooting. It pairs a 24-inch vent-rib barrel with a 3″ chamber and a durable gas system engineered for extended intervals between maintenance. The receiver is finished in tungsten-gray anodizing and the shotgun ships optic-ready for Shield RMSc-pattern micro dot sights while retaining a HiViz TriComp front fiber optic sight for rapid acquisition. Controls and ergonomics — including an adjustable synthetic stock and an enlarged charging handle and elevator — are optimized for competitive loading and fast follow-up shots.

Key Specifications

• The gauge is 12 Gauge.
• The barrel measures 24 inches and features a vent rib.
• The magazine capacity is 9+1 rounds.
• The chamber accepts 3 inch shells.
• The unloaded weight is approximately 7.75 lbs.
• The overall length is 44.75 inches.
• The stock uses an adjustable black synthetic design with a length of pull of 13–14.25 inches.
• The action type is Semi-automatic.
• The shotgun is optic-ready for Shield RMSc-pattern micro dot sights and includes a HiViz TriComp front fiber optic sight.
• Includes a Briley extended choke set and a cylinder tube.

Purpose-built for competitive shooting, the 940 JM Pro combines a clean-running gas system and coated internal components for smooth operation with competition-oriented controls and an adjustable stock for shooter preference. Its optic-ready receiver and fiber-optic sighting make it practical for modern events while the included Briley choke set provides patterning flexibility right out of the box.

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