Mossberg120921943
Mossberg JM Pro 12 Gauge 24" MultiCam 9-Round Shotgun$1,029.67
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Availability: In Stock
The Mossberg JM Pro 12 Gauge semi-automatic shotgun is built from the ground up for competitive 3-gun shooters who demand speed, reliability, and modularity. This 24-inch barrel model arrives optic-ready with patent-pending receiver cuts and a removable cover plate designed to accept Shield RMSc-pattern micro dot sights, giving you the mount flexibility to dial in your preferred aiming system without custom gunsmithing. With a 9-round capacity, adjustable length of pull, and a clean-running gas system with specially finished internal components, the JM Pro delivers the reliability and ergonomic refinement that competition demands.
From the loading port to the magazine release, every control on the JM Pro is engineered for speed. The competition-level loading port elevator and follower make quad loading smooth and intuitive, while the quick-empty magazine release keeps your transition times sharp. The gun ships with a set of Briley choke tubes and a HIVIZ TriComp fiber optic front sight, giving you versatility across different shooting disciplines and course layouts. The drilled and tapped receiver opens the door to additional mounting options as your setup evolves.
The JM Pro's synthetic stock and forend wear Mossberg's signature texturing for confident handling in any condition, and the adjustable stock drop system lets you fine-tune your cheek weld for the way you actually shoot. Available in black and grey, it's purpose-built for the shooter who wants a semi-auto that won't slow them down on the clock.
| Gauge | 12 |
| Action Type | Semi-Auto Gas |
| Chamber Size | 3 inch |
| Barrel Length | 24 inches |
| Barrel Finish | Matte Blue |
| Barrel Type | Vent Rib |
| Magazine Capacity | 9+1 |
| Overall Length | 44.75 inches |
| Weight | 7.75 lbs |
| Length of Pull (Adjustable) | 13–14.25 inches |
| Stock | Synthetic (Black) with Adjustable LOP and Cast/Drop |
| Chokes | Briley Choke Tube Set |
| Front Sight | HIVIZ TriComp Fiber Optic; Optic-Ready (Shield RMSc) |
| Receiver | Drilled and Tapped |
Yes. The JM Pro ships with a removable cover plate and patent-pending receiver cuts designed to accept Shield RMSc-pattern micro dot sights. The receiver is also drilled and tapped, so you have additional mounting options as your setup evolves.
The JM Pro ships with a set of Briley choke tubes, giving you options to dial in your shot pattern for different shooting situations.
Yes. The JM Pro features an adjustable length of pull ranging from 13 to 14.25 inches, as well as an adjustable stock drop system so you can fine-tune fit and cheek weld to your preference.
The JM Pro ships with a set of Briley choke tubes and a HIVIZ TriComp fiber optic front sight. It is optic-ready and accepts Shield RMSc-pattern micro dot sights via the removable cover plate.
Availability: In Stock
The Mossberg JM Pro 12 Gauge semi-automatic shotgun is built from the ground up for competitive 3-gun shooters who demand speed, reliability, and modularity. This 24-inch barrel model arrives optic-ready with patent-pending receiver cuts and a removable cover plate designed to accept Shield RMSc-pattern micro dot sights, giving you the mount flexibility to dial in your preferred aiming system without custom gunsmithing. With a 9-round capacity, adjustable length of pull, and a clean-running gas system with specially finished internal components, the JM Pro delivers the reliability and ergonomic refinement that competition demands.
From the loading port to the magazine release, every control on the JM Pro is engineered for speed. The competition-level loading port elevator and follower make quad loading smooth and intuitive, while the quick-empty magazine release keeps your transition times sharp. The gun ships with a set of Briley choke tubes and a HIVIZ TriComp fiber optic front sight, giving you versatility across different shooting disciplines and course layouts. The drilled and tapped receiver opens the door to additional mounting options as your setup evolves.
The JM Pro's synthetic stock and forend wear Mossberg's signature texturing for confident handling in any condition, and the adjustable stock drop system lets you fine-tune your cheek weld for the way you actually shoot. Available in black and grey, it's purpose-built for the shooter who wants a semi-auto that won't slow them down on the clock.
| Gauge | 12 |
| Action Type | Semi-Auto Gas |
| Chamber Size | 3 inch |
| Barrel Length | 24 inches |
| Barrel Finish | Matte Blue |
| Barrel Type | Vent Rib |
| Magazine Capacity | 9+1 |
| Overall Length | 44.75 inches |
| Weight | 7.75 lbs |
| Length of Pull (Adjustable) | 13–14.25 inches |
| Stock | Synthetic (Black) with Adjustable LOP and Cast/Drop |
| Chokes | Briley Choke Tube Set |
| Front Sight | HIVIZ TriComp Fiber Optic; Optic-Ready (Shield RMSc) |
| Receiver | Drilled and Tapped |
Yes. The JM Pro ships with a removable cover plate and patent-pending receiver cuts designed to accept Shield RMSc-pattern micro dot sights. The receiver is also drilled and tapped, so you have additional mounting options as your setup evolves.
The JM Pro ships with a set of Briley choke tubes, giving you options to dial in your shot pattern for different shooting situations.
Yes. The JM Pro features an adjustable length of pull ranging from 13 to 14.25 inches, as well as an adjustable stock drop system so you can fine-tune fit and cheek weld to your preference.
The JM Pro ships with a set of Briley choke tubes and a HIVIZ TriComp fiber optic front sight. It is optic-ready and accepts Shield RMSc-pattern micro dot sights via the removable cover plate.
SKU: 120915156 • Weight: 10.5oz
SKU: 120915156 • Weight: 10.5oz