Mossberg 940 JM Pro 12ga 24 in Vent Rib Optic-Ready

The Mossberg 940 JM Pro is a competition-oriented semi-automatic 12 gauge designed for speed, reliability, and repeatable performance. It ships with a 24 inch vent rib barrel and an optic-ready receiver compatible with Shield RMSc-pattern micro dot sights. The design includes an adjustable synthetic stock and a clean-running gas system intended to support extended range use in competitive formats.

Key Specifications

• The action type is Semi-Auto for rapid follow-up shots.
• The gauge is 12 Gauge.
• The barrel measures 24 inches with a vent rib profile.
• The chamber accepts a maximum size of 3 inches.
• The barrel finish is Matte Blued.
• The receiver finish is Tungsten gray anodized.
• The platform is Optic-Ready (Shield RMSc-pattern) for micro dot mounting.
• The stock is a black synthetic adjustable LOP set between 13" and 14.25".
• Sights include a HiViz TriComp/CompSight fiber-optic front sight.
• Includes a Briley extended choke (extended choke included).

This model consolidates competition-minded features—an optic-ready receiver, streamlined forend, enlarged loading port, and an adjustable stock—into a full-size shotgun package. The combination of a reliable gas system, competition ergonomics, and accessory-ready receiver supports fast reloads and consistent presentation for sport shooting applications.