• Mossberg 940 JM Pro 12-gauge competition shotgun

Mossberg 940 JM Pro 12-gauge competition shotgun

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Mossberg 940 JM Pro 12-gauge competition shotgun

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SHOT Show 2020 – Mossberg's new 940 JM Pro semi-automatic 12-gauge shotgun, developed alongside world-renown shooters Jerry and Lena Miculek, brings the 940 autoloading platform to a whole new level of competition-ready performance

Mossberg 940 JM Pro 12-gauge competition shotgun

New for 2020 from Mossberg comes the Mossberg 940 JM Pro semi-automatic 12-gauge shotgun, a brand new competition-oriented platform available in two 10-shot models.


The result of two years of development alongside world champion shooters, Jerry and Lena Miculek, the 940 JM Pro is designed to meet the needs of today’s competition shooter with the incorporation of an array of aftermarket modifications and accessories direct from the factory.


Using the iconic 930 JM Pro-Series Competition Shotgun as a baseline, the Miculeks worked with Mossberg engineers to identify and help re-design major areas of improvement that included the gas system; loading port; point-of-aim/point-of-impact; overall product fit and functionality; sight system; and choke system.


The new gas system on the Mossberg 940 JM Pro will run up to 1,500 rounds before cleaning and will reliably cycle any type of quality factory-made 2 ¾ or 3-inch ammunition.


A stepped and vented-spacer component has also been incorporated that keeps the gas system running fast by shedding any moisture or carbon build-up every time it cycles. The 940 JM Pro's loading port has been designed to allow the user to efficiently quad-load the magazine tube straight out of the box without any need of modification to the receiver. The elevator and shell catch have also been designed to eliminate common pinch-points.

Mossberg 940 JM Pro 12-gauge competition shotgun
Mossberg 940 JM Pro 12-gauge competition shotgun

Mossberg engineers worked to design a new barrel-making process for the 940 that ensures the consistent production of a platform that will allow a user to maintain an accurate point-of-aim/point-of-impact when utilizing quality factory-made ammunition.

Mossberg 940 JM Pro 12-gauge competition shotgun

The new 940 JM Pro sports a slim profile and ergonomic forend and stock, both feature Mossberg’s signature texturing that offers a positive, yet comfortable grip. The stock is completely user-configurable, offering out-of-the box adjustability for length-of-pull (13 – 14.25 inches), drop, and cast. The receiver is anodized for durability and the controls (charging handle and bolt release button) are oversized. Internal components are nickel boron-coated for smooth, reliable functionality.


The 940 JM Pro utilizes a fiber optic HIVIZ TriComp sight system that offers nine user-interchangeable LitePipes, in three colors and three shapes of varied height, for superior sighting in any competitive environment.
Equipped with Mossberg’s Accu-Choke system, the 940 JM Pro ships with a set of Briley extended chokes (Cylinder, Improved Cylinder and Modified) that come engraved with constriction for easy selection.


Two models of the 940 JM Pro are being initially offered; both featuring 24-inch barrel lengths; 10-round total capacity; and matte blue-finish on the barrels. Options include choice of black synthetic stock and forend with tungsten gray-anodized receiver. Gold-anodized bolt handle; bolt release button; magazine extension nut; safety button; trigger; and cocking indicator.


With the second option, the stock and forend are camouflaged with the proven Black MultiCam pattern. The receiver and controls wear a black anodized-finish.

VIDEO / Mossberg 940 JM Pro Competition Shotgun