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The Mossberg 940 Pro represents the evolution of Mossberg’s legendary shotgun lineup — a modern, gas-operated semi-auto designed for hunters, clay shooters, and competitors who demand reliability and performance. Praised for its refined gas system, smooth cycling, corrosion-resistant internals, and ergonomic improvements, the 940 Pro builds on the heritage of the 930 platform while setting a new standard for durability and ease of maintenance. From the duck blind to the 3-Gun course, the 940 Pro delivers fast, clean, and consistent performance every time you pull the trigger.
Introduced in 2020, the Mossberg 940 Pro Series succeeded the well-known 930, offering major improvements in gas operation, maintenance intervals, and shooter ergonomics. While the 930 earned respect for its value and dependability, the 940 refined everything that shooters loved and fixed what they didn’t. Engineered for endurance, the new 940 can run over 1,500 rounds between cleanings — thanks to a redesigned self-draining gas system and corrosion-resistant components.
The series includes several specialized variants: the 940 Pro Field, 940 Pro Waterfowl, 940 Pro Tactical, and 940 JM Pro (designed with champion shooter Jerry Miculek). Each model is optimized for specific applications, from upland hunting to high-speed competition.
| Specification | Detail |
|---|---|
| Gauge | 12 gauge |
| Action | Gas-operated semi-automatic |
| Chamber | 3″ (accepts 2 ¾″ and 3″ shells) |
| Barrel Length | 28″ (940 Pro Field); 24″ (Waterfowl); 18.5″ (Tactical) |
| Overall Length | 48.75″ (Field) |
| Weight | ~7.75 lb |
| Magazine Capacity | 4+1 (standard tube; 9+1 on competition models) |
| Receiver Material | Anodized aluminum with nickel-boron internal coatings |
| Stock Options | Synthetic textured stock with adjustable length of pull, cast, and drop |
| Sights | Fiber-optic front bead or optics mount rail (variant dependent) |
| Finish | Matte black, Mossy Oak Shadow Grass Blades™, Patriot Brown Cerakote, etc. |
The 940’s self-draining gas piston system significantly reduces fouling and carbon buildup. Nickel-boron coatings on critical components — including the gas piston, magazine tube, hammer, and sear — help the gun run clean for over 1,500 rounds without maintenance. This upgrade addresses the main criticism of the previous 930 series and delivers outstanding long-term reliability.
The 940 Pro features an improved stock geometry with a slimmer fore-end, adjustable length of pull (13″–14.25″), and user-tunable cast and drop spacers. This custom fit ensures a comfortable and consistent mount for different shooters and applications.
Nearly every moving component inside the 940 is treated with a protective nickel-boron or cerakote finish to enhance resistance to moisture, salt, and debris — a must for waterfowlers and outdoor competitors.
The receiver and barrel interface allow fast disassembly for cleaning and maintenance without tools. Barrels are interchangeable within the series, and the optic-ready receiver on Tactical and Turkey models adds modern versatility.
Every detail on the 940 Pro has a purpose: from the oversized charging handle and bolt release to the beveled loading port and extended mag tube (on competition versions). Together they create one of the smoothest, fastest cycling semi-autos in its price class.
The 940 Pro maintains tight patterns and consistent point of impact with factory chokes and quality ammunition. Whether breaking clays or dropping ducks, the gas system and precision barrel alignment deliver repeatable accuracy and minimal muzzle rise.
The refined gas piston system and soft synthetic stock dramatically reduce felt recoil and improve follow-up speed. Shooters often note that the 940 cycles as smoothly as semi-autos costing hundreds more.
Built to withstand harsh field conditions, the 940 Pro runs flawlessly with everything from light target loads to 3″ magnums. Its self-cleaning system and durable coatings ensure unmatched reliability over thousands of rounds.
Routine maintenance on the 940 Pro is simple thanks to its tool-less design. Remove the barrel, gas piston, and bolt assembly to clean the gas ports and piston rings after extended use. Nickel-boron coatings reduce the need for heavy lubrication — a light wipe of oil is enough to keep it running smoothly. The synthetic stocks and Cerakote finishes also require minimal upkeep in harsh weather.
The Mossberg 940 Pro is a standout modern semi-automatic shotgun that delivers professional-grade reliability at an accessible price. Its self-cleaning gas system, smooth cycling, and corrosion-resistant construction make it ideal for hunters, competitors, and tactical shooters alike. Whether you choose the Waterfowl model for the blind or the JM Pro for the range, the 940 Pro series proves Mossberg’s commitment to innovation while staying true to its heritage of reliability and value.
Disclaimer: Always follow local laws and safe-handling practices when purchasing or using firearms. This article is for informational purposes only.
