Description
The Mossberg 940 JM Pro 12 Ga, 24″ Barrel, 3″, Black/Tungsten, Fiber Optic, 9rd is a gas-operated, competition-ready semi-automatic shotgun designed for 3-gun and practical shooting sports. It’s built on the proven 940 platform with enhancements by champion shooter Jerry Miculek, offering reliable cycling with a wide range of loads and a high capacity for fewer reloads on the clock. At $1033.06, it’s a serious contender that bridges the gap between entry-level autoloaders and premium race guns.
Key Features
- Competition-Optimized: Developed with input from Jerry Miculek for faster handling and reliable performance under pressure.
- Enhanced Reliability: Self-regulating gas system runs light target loads up to heavy 3″ magnums without adjustment.
- High-Visibility Sights: Green fiber optic front sight for quick target acquisition in varied lighting.
- Extended Capacity: Comes with a 9-round magazine tube (plus one in the chamber) to tackle longer shotgun stages.
- User-Friendly Controls: Oversized safety and bolt release are easy to manipulate, even with gloves on.
- Durable Finish: Black/Tungsten Cerakote finish provides corrosion resistance and a distinctive two-tone look.
Specifications & Details
| Specification | Detail |
|---|---|
| Gauge | 12 Gauge |
| Chamber | 3″ |
| Barrel Length | 24″ |
| Overall Length | 45.25″ |
| Capacity | 9+1 Rounds |
| Weight | 7.5 lbs |
| Sights | Green Fiber Optic Front, Adjustable Ghost Ring Rear |
| Finish | Black/Tungsten Cerakote |
Here’s the thing—the 940 JM Pro’s gas system is its secret weapon. It’s designed to handle the 7/8 oz. target loads common in competition without choking, a known weak spot for some inertia-driven systems. This reliability with lighter, cheaper ammo is a major cost-saver over time. The 24″ barrel strikes a practical balance, offering a smooth swing for clays and birdshot while remaining maneuverable for close-quarters stages. The fiber optic front sight is a simple but critical upgrade, providing a bright aiming point that’s drop-in ready for most shooters—no gunsmithing required to get a clear sight picture. The gun ships with spacers to adjust length of pull, a thoughtful touch for a better out-of-the-box fit.
Who This Shotgun Is For
This shotgun is built for the active 3-gun or practical shotgun competitor who needs reliability without a custom shop price tag. It’s also a solid pick for the serious recreational shooter who wants a versatile, high-capacity semi-auto for dynamic range days, tactical training, or even waterfowl hunting where its corrosion-resistant finish is an asset. It’s less ideal for someone seeking a dedicated home defense gun where a shorter barrel is preferred, or for the hunter who needs a lightweight field gun for long walks.
Pros & Cons
Pros: Exceptional reliability across a broad spectrum of ammunition, which is the single most important feature for competition. The high 9+1 capacity reduces reloads in stages. The gas-operated action noticeably reduces felt recoil compared to many inertia guns, aiding in faster follow-up shots. The price point is competitive when you compare its features to other purpose-built competition shotguns from brands like Beretta or Benelli, which often start several hundred dollars higher.
Cons: At 7.5 pounds, it’s not a lightweight field gun. The 24″ barrel, while great for competition, is a bit long for tight home defense scenarios. Some users might find the initial break-in period requires a few boxes of heavier loads to smooth out the action completely—a common trait for many semi-autos. The magazine tube capacity, while generous, is not easily field-modified like some tube-fed shotguns.
Frequently Asked Questions
Q: Will this shotgun cycle light 1 oz. or 7/8 oz. target loads reliably?
A: Yes, that’s a primary design goal. The self-regulating gas system is specifically tuned to handle light target loads up to 3″ magnums, making it ideal for competition where low-recoil, inexpensive ammo is standard. A short break-in period with heavier loads (like 1 1/8 oz. #7.5 or #8 shot) is recommended for optimal performance from the start.
Q: Is the magazine tube plug removable for full capacity use?
A: The shotgun ships configured for its full 9+1 round capacity and is ready for competition or range use. For hunting in states with capacity restrictions, a plug is included and easily installed to limit the tube to the federally compliant 2+1 capacity for migratory birds. This versatility is a key part of its value.
Q: What choke tubes does it use, and are they included?
A: The Mossberg 940 JM Pro uses the common and versatile Accu-Choke thread pattern (Mossberg’s standard), which is compatible with a huge aftermarket selection of tubes from brands like Carlson’s and Trulock. It typically comes with three choke tubes (Improved Cylinder, Modified, and Full), giving you options for everything from close-range steel to long-distance clays.
When you stack up its features against its price, the Mossberg 940 JM Pro presents a compelling case for the budget-conscious competitor. It delivers the core performance needed to be competitive—reliability, capacity, and shootability—without the premium branding cost. It’s a workhorse, not a show pony, and that’s exactly what many shooters need. This model is available at firearms-missouri.com for Missouri residents and nationwide, with an FFL transfer required for firearm purchases. Check current availability to see if this practical competition tool fits your needs.
Reviews
There are no reviews yet.