Mossberg120915156
Mossberg JM Pro 12 Gauge 24" Black/Grey 9-Round Shotgun$1,029.67
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Availability: In Stock
Current Stock: Out of stock
The Mossberg 940 JM Pro 12-gauge semi-auto shotgun is purpose-built for competitive 3-gun and tactical clay events. This optic-ready platform combines speed-optimized features with the durability needed for high-round-count matches. The 24-inch vent-rib barrel and 4+1 capacity make it nimble enough for fast transitions without sacrificing load options, while the receiver is drilled, tapped, and cut to accept Shield RMSc-pattern micro red dots for low-profile, co-witnessed aiming.
Gas operation is the foundation here: Mossberg's clean-running gas vent system keeps the action cycling smoothly through high-volume competition. Internal parts are specially finished to resist carbon and fouling—essential when you're running dozens of shells per stage. The loading port elevator and follower are tuned for competition-speed reloads, and the quick-empty magazine release won't slow you down when you need to ditch empties fast. Four Briley choke tubes let you dial in the pattern for everything from buckshot to slugs.
Fit and control matter just as much as raw speed. The synthetic stock features an adjustable length of pull (13–14.25 inches) and drop system so you can dial in your sight picture and cheek weld. The forend and stock sport Mossberg's signature texturing for positive grip in wet conditions. The HIVIZ TriComp fiber-optic front sight is bright and fast on target. All told, you're looking at 7.75 pounds of competition-ready shotgun—light enough to mount quickly, heavy enough to stay planted when you need precision.
Whether you're running a local 3-gun match or training for the next level, the 940 JM Pro is engineered to help you shoot faster and reload cleaner than stock. This is a shotgun that rewards trigger work and rewards practice.
| Gauge | 12 |
| Action | Semi-auto (Gas-operated) |
| Chamber | 3 inch |
| Barrel Length | 24 inches |
| Barrel Type | Vent rib |
| Barrel Finish | Matte blue |
| Capacity | 4+1 |
| Chokes | Briley extended set (4 tubes) |
| Front Sight | HIVIZ TriComp fiber optic |
| Optic Mount | Optic-ready (Shield RMSc-pattern compatible) |
| Stock | Adjustable synthetic (black) with LOP and drop adjustment |
| Adjustable Length of Pull | 13–14.25 inches |
| Overall Length | 44.75 inches |
| Weight | 7.75 lbs |
The receiver is cut to accept Shield RMSc-pattern micro red dots. The optic-ready design lets you mount directly to the receiver for a clean, co-witnessed setup with the included HIVIZ fiber-optic front sight.
Yes. The 940 JM Pro is optimized for 3-gun and tactical clay competition. The 24-inch barrel, 4+1 capacity, competition-tuned loading port, quick-empty magazine release, and gas system are all engineered around match-stage demands.
Four Briley extended choke tubes are included, giving you flexibility to tune the pattern for different shot sizes and distances.
Yes. The synthetic stock offers adjustable length of pull (13–14.25 inches) and a drop system so you can dial in your cheek weld and sight picture.
SKU: 120923803 • Weight: 9.95oz
Availability: In Stock
Current Stock: Out of stock
The Mossberg 940 JM Pro 12-gauge semi-auto shotgun is purpose-built for competitive 3-gun and tactical clay events. This optic-ready platform combines speed-optimized features with the durability needed for high-round-count matches. The 24-inch vent-rib barrel and 4+1 capacity make it nimble enough for fast transitions without sacrificing load options, while the receiver is drilled, tapped, and cut to accept Shield RMSc-pattern micro red dots for low-profile, co-witnessed aiming.
Gas operation is the foundation here: Mossberg's clean-running gas vent system keeps the action cycling smoothly through high-volume competition. Internal parts are specially finished to resist carbon and fouling—essential when you're running dozens of shells per stage. The loading port elevator and follower are tuned for competition-speed reloads, and the quick-empty magazine release won't slow you down when you need to ditch empties fast. Four Briley choke tubes let you dial in the pattern for everything from buckshot to slugs.
Fit and control matter just as much as raw speed. The synthetic stock features an adjustable length of pull (13–14.25 inches) and drop system so you can dial in your sight picture and cheek weld. The forend and stock sport Mossberg's signature texturing for positive grip in wet conditions. The HIVIZ TriComp fiber-optic front sight is bright and fast on target. All told, you're looking at 7.75 pounds of competition-ready shotgun—light enough to mount quickly, heavy enough to stay planted when you need precision.
Whether you're running a local 3-gun match or training for the next level, the 940 JM Pro is engineered to help you shoot faster and reload cleaner than stock. This is a shotgun that rewards trigger work and rewards practice.
| Gauge | 12 |
| Action | Semi-auto (Gas-operated) |
| Chamber | 3 inch |
| Barrel Length | 24 inches |
| Barrel Type | Vent rib |
| Barrel Finish | Matte blue |
| Capacity | 4+1 |
| Chokes | Briley extended set (4 tubes) |
| Front Sight | HIVIZ TriComp fiber optic |
| Optic Mount | Optic-ready (Shield RMSc-pattern compatible) |
| Stock | Adjustable synthetic (black) with LOP and drop adjustment |
| Adjustable Length of Pull | 13–14.25 inches |
| Overall Length | 44.75 inches |
| Weight | 7.75 lbs |
The receiver is cut to accept Shield RMSc-pattern micro red dots. The optic-ready design lets you mount directly to the receiver for a clean, co-witnessed setup with the included HIVIZ fiber-optic front sight.
Yes. The 940 JM Pro is optimized for 3-gun and tactical clay competition. The 24-inch barrel, 4+1 capacity, competition-tuned loading port, quick-empty magazine release, and gas system are all engineered around match-stage demands.
Four Briley extended choke tubes are included, giving you flexibility to tune the pattern for different shot sizes and distances.
Yes. The synthetic stock offers adjustable length of pull (13–14.25 inches) and a drop system so you can dial in your cheek weld and sight picture.
SKU: 120923803 • Weight: 9.95oz
