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Overview
The Mossberg 940 JM Pro 12 Gauge 24in 9+1 MultiCam delivers competition-ready speed with an optic-ready receiver, adjustable stock, and gas-operated reliability for fast follow-up shots.
Nationwide shipping. Order from anywhere in the US.
The Mossberg 940 JM Pro 12 Gauge 24in 9+1 MultiCam is a competition-ready semi-auto shotgun built for speed and reliability. This gas-operated 12-gauge features a 24-inch vent-rib barrel, a 9+1 round capacity, and an adjustable MultiCam synthetic stock—designed to deliver fast follow-up shots round after round.
Manufacturer
Mossberg
Model
940 JM Pro
Material
MultiCam synthetic stock, aluminum receiver
Compatibility
Shield RMSc micro red dot optics
Finish
MultiCam camouflage
Weight
7.5 lbs (per manufacturer specs)
Condition
New
Key Features
Optic-Ready Receiver – Patterned for Shield RMSc micro dot sights, so you can mount a red dot without milling or plates. Why it matters: Faster target acquisition in competition stages.
24-Inch Vent-Rib Barrel – Balances swing speed with pattern control. Why it matters: You get a smooth point and tight shot strings for clays or steel.
9+1 Magazine Capacity – Holds ten total rounds with the included tube extension. Why it matters: Fewer reloads in high-volume stages keep you in the fight.
Adjustable Length of Pull and Drop – Custom-fit stock with shims and spacers. Why it matters: A proper fit reduces felt recoil and speeds up mount-to-shot time.
Gas-Operated System – Self-cleaning piston design reduces fouling. Why it matters: Reliable cycling with light target loads and heavy magnums without constant cleaning.
Who It’s For
This shotgun is built for 3-Gun, IPSC, and tactical shotgun competitors who need a reliable, fast-cycling platform with adjustable ergonomics. It also suits hunters who want a lightweight, camo shotgun with a red dot-ready receiver for low-light or brush hunting.
Pros and Cons
Pros: Fast follow-up shots, low recoil impulse, easy red dot mounting, adjustable stock, high capacity out of the box.
Cons: The factory trigger is serviceable but not as crisp as aftermarket units from Timney or Geissele—plan on a trigger upgrade if you’re chasing tenths of a second.
Comparison
Feature
Mossberg 940 JM Pro
Beretta 1301 Comp Pro
Remington 870 DM
Action
Gas-operated semi-auto
Gas-operated semi-auto
Pump-action
Capacity
9+1
8+1
6+1 (detachable magazine)
Weight
7.5 lbs
7.2 lbs
7.8 lbs
Stock
Adjustable LOP/drop
Fixed competition stock
Fixed synthetic
Optic Ready
Yes (Shield RMSc)
No (requires drilling)
No
Price
$1,047.95
$1,499.00
$749.00
Compared to the Beretta 1301 Comp Pro, the Mossberg 940 JM Pro offers a lower entry price, an optic-ready receiver, and an adjustable stock—key advantages for shooters who want customization. Versus the Remington 870 DM, the 940 cycles faster and holds more rounds, but the 870 DM is simpler and cheaper for budget-minded shooters.
FAQ
Does the Mossberg 940 JM Pro come with a red dot?
No, the shotgun has an optic-ready receiver patterned for Shield RMSc micro dot sights, but the red dot is sold separately. You can mount most RMS-style dots directly.
What chokes does it use?
It accepts standard Mossberg Accu-Set choke tubes. The shotgun ships with Improved Cylinder, Modified, and Full chokes.
Can I shoot heavy magnum loads through it?
Yes. The gas system is designed to cycle 2¾-inch and 3-inch shells, from light target loads to heavy magnum buckshot and slugs.
Is the stock adjustable for left-handed shooters?
Yes, the stock can be adjusted for length of pull and drop via shims, and the safety is reversible for left-hand operation.
Ready to Order
Buy the Mossberg 940 JM Pro 12 Gauge 24in 9+1 MultiCam today. Nationwide delivery to all 50 states. Ships in 1-2 business days. 30-day returns accepted. Secure checkout guaranteed.
✓ Nationwide delivery (all 50 states) ✓ Ships 1-2 business days ✓ 30-day returns ✓ Secure checkout
