Mossberg 940 JM Pro | 12 Gauge | 24 in | 9+1

The Mossberg 940 JM Pro is a 12-gauge semi-automatic shotgun engineered for competitive shooting. It features an optic-ready receiver designed for Shield RMSc-pattern micro dot sights, a 24-inch vent-rib barrel, and an adjustable Black Multicam synthetic stock for shooter fit. The autoloading gas system and enhanced feeding components are intended to support high-rate competitive use and consistent cycling.

Product Specifications

• The model is Mossberg 940 JM Pro (MFG# 85166).
• The gauge is 12 Gauge.
• The barrel measures 24 inches and features a vent rib.
• The chamber accepts 3-inch shells.
• The capacity is 9+1.
• The finish is Matte Blued.
• The stock is Black Multicam synthetic, adjustable length of pull 13-14.25 inches.
• The sighting system is a HiViz fiber optic front sight.
• The weight is 7.75 lbs.
• The receiver finish is Blued.
• Includes Briley extended choke and a cylinder choke tube.
• The overall length is 44.75 inches.
• The UPC is 015813851664.

The 940 JM Pro combines competition-focused ergonomics with an optic-ready receiver and a magazine capacity designed for extended stages. The adjustable stock and streamlined forend help optimize shooter fit and reload ergonomics, while the gas system and coated internal components are aimed at reliable operation during repetitive use. For competitors and serious target shooters who want a factory-built, optics-ready 12-gauge semi-auto, the 940 JM Pro delivers a package focused on speed, fit, and repeatable cycling.

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