Description
Built for target shooting, the Mossberg 940 JM PRO is a semi-automatic 12 gauge shotgun with a 24 inch vent rib barrel and a 3 inch chamber. The receiver is optic-ready for Shield RMSc-pattern micro dot sights, and the shotgun includes a front fiber-optic sight. We point this model toward shooters seeking a competition-oriented shotgun with adjustable fit features.
Key Specifications
- The shotgun uses a semi-automatic action for its operating system.
- It is chambered for 12 gauge shotshells.
- The chamber accepts shells up to 3 inches.
- The vent rib barrel measures 24 inches for the stated target-shooting configuration.
- Overall length is listed as 44.75 inches.
- The shotgun weighs 7.75 pounds.
- The barrel has a matte blued finish.
- The receiver is finished in tungsten gray.
- The shotgun has a black synthetic adjustable stock with a 13 inch to 14.25 inch length-of-pull range.
- The sighting system includes a HiViz CompSight fiber-optic front sight, and the receiver is optic-ready for Shield RMSc-pattern micro dot sights.
The adjustable stock provides control over length of pull, cast, and drop, while the black synthetic construction keeps the exterior configuration straightforward. A recoil pad, swivel studs, checkering, tang safety, and an elongated pinch-free elevator are listed among the equipment. The shotgun also includes an improved-cylinder tube, and the receiver includes an optic-ready setup for the specified Shield RMSc pattern. Its vent rib barrel, fiber-optic front sight, and adjustable stock define the 940 JM PRO.




