The Mossberg 940 JM Pro is a semi-automatic 12-gauge shotgun engineered for competitive shooting, including 3-Gun and target applications. It pairs a 24-inch vent-rib barrel with an optic-ready receiver and user-adjustable synthetic stock to support fast follow-up shots and ergonomic fit. Built components emphasize durability and serviceability for sustained range use.
Key Specifications
- The shotgun is chambered for 12 gauge to accommodate common 12-gauge loads up to the stated chamber size.
- The action is a semi-automatic gas-operated system designed for reduced felt recoil and reliable cycling.
- The barrel measures 24 inches and uses a vent-rib profile finished in matte blued color for traditional sight plane and heat dissipation.
- The maximum chamber size is 3 inches, compatible with 3″ length shotshells as specified by the manufacturer.
- The receiver is finished in tungsten gray and the platform is specified as optics-ready with Shield RMSc-pattern compatibility.
- The stock is a black synthetic design with an adjustable length of pull set to 13″–14.25″ for on-the-fly fit adjustments.
- The firearm ships with a HiViz TriComp fiber-optic front sight and a set of Briley extended choke tubes included.
- The unloaded weight is listed as approximately 7.75 lbs with an overall length of 44.75 inches.
This model emphasizes practical competition features: a clean-running gas-vent system, an enlarged loading port and follower for faster reloads, an oversized charging handle, and an optic-ready receiver to accept Shield RMSc-pattern micro dot sights with a removable cover plate. The synthetic adjustable stock provides a range of length-of-pull settings to suit different shooters, and the HiViz front sight gives a bright, fast sight picture for close-to-moderate ranges.
Note: the manufacturer lists a commercial restriction of “NO SALE TO ILLINOIS PICA” on supplied product data; please consult local rules and vendor policy for sale or transfer limitations. This shotgun is specified for lawful shooting sports and range use, and is presented here for informed buyers seeking robust competition-grade equipment.
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