Mossberg Model 940


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Mossberg Model 940

Mossberg 940 JM Pro 12 Gauge Semi-Auto Shotgun with Black Multicam Stock


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Mossberg Model 940

What’s in the Box

Mossberg 940 JM Pro 12 Gauge Semi-Auto Shotgun with Black Multicam Stock

Briley Extended Chokes

Cable Lock

Owner’s Manual


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.


Allthe newly designed components led the way for the introduction of a new autoloading platform from Mossberg, the 940. Major attributes of the 940 autoloading shotgun include:


Gas System: The new gas system on the 940 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-upevery time it cycles.

Loading Port: The 940’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.

Point-of-Aim / Point-of-Impact: 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.

Fit and Functionality: The 940 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.

Sight System: The 940 JM Pro utilizesa 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.

Choke System: 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.

Firearm Specifications

Gauge: 12

Capacity: 9+1

Chamber: 3″

Barrel Type: Vent Rib

Barrel Length: 24″

Sight/Base: Front Fiber Optic

Choke: Briley Ext Set

LOP Type: Adjustable

LOP: 13″-14.25″

Barrel Finish: Matte Blued

Stock Finish: Adj. LOP Cast Drop Stock – Synthetic (Black Multicam)

Weight: 7.75

Length: 44.75″

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Mossberg Model 940