The Mossberg JM Pro 12 Gauge 24" MultiCam shotgun is built from the ground up for 3-gun competition and high-volume shooting disciplines. This semi-automatic 12-gauge brings together purpose-designed features that serious competitors expect: an optic-ready receiver that accepts Shield RMSc-pattern micro dot sights, a clean-running gas system with specially coated internals, and a 9+1 round capacity that keeps you in the fight. The 24-inch vent rib barrel with matte blue finish pairs with the distinctive MultiCam synthetic furniture to create a modern, functional platform that handles the demands of competition stages, tactical shooting courses, or high-round-count range sessions.

Speed and reliability start inside. The gas-vent system is engineered for smooth cycling and durability across thousands of rounds, while competition-grade internals—including an optimized loading port elevator and follower—support quad loading and fast reloads without hiccups. The quick-empty magazine release and Briley choke tube setup give you the tuning options competitive shooters need. On the outside, user-adjustable length of pull (13–14.25 inches) and cast/drop adjustment let you dial in the fit and sight picture that work for your body and shooting style, so you're not fighting the gun when speed counts.

The drilled and tapped receiver is ready for optics or traditional sighting systems. It comes equipped with a HIVIZ TriComp fiber optic front sight, and the Shield RMSc-pattern cuts allow you to add a micro red dot for faster target acquisition and improved eye alignment. The synthetic stock features Mossberg's signature texturing on both stock and forend for control in adverse conditions. At 7.75 pounds and 44.75 inches overall, this is a handy platform that doesn't sacrifice durability or capacity for the sake of saving ounces.

The Mossberg JM Pro 12 Gauge 24" MultiCam shotgun is built from the ground up for 3-gun competition and high-volume shooting disciplines. This semi-automatic 12-gauge brings together purpose-designed features that serious competitors expect: an optic-ready receiver that accepts Shield RMSc-pattern micro dot sights, a clean-running gas system with specially coated internals, and a 9+1 round capacity that keeps you in the fight. The 24-inch vent rib barrel with matte blue finish pairs with the distinctive MultiCam synthetic furniture to create a modern, functional platform that handles the demands of competition stages, tactical shooting courses, or high-round-count range sessions.

Speed and reliability start inside. The gas-vent system is engineered for smooth cycling and durability across thousands of rounds, while competition-grade internals—including an optimized loading port elevator and follower—support quad loading and fast reloads without hiccups. The quick-empty magazine release and Briley choke tube setup give you the tuning options competitive shooters need. On the outside, user-adjustable length of pull (13–14.25 inches) and cast/drop adjustment let you dial in the fit and sight picture that work for your body and shooting style, so you're not fighting the gun when speed counts.

The drilled and tapped receiver is ready for optics or traditional sighting systems. It comes equipped with a HIVIZ TriComp fiber optic front sight, and the Shield RMSc-pattern cuts allow you to add a micro red dot for faster target acquisition and improved eye alignment. The synthetic stock features Mossberg's signature texturing on both stock and forend for control in adverse conditions. At 7.75 pounds and 44.75 inches overall, this is a handy platform that doesn't sacrifice durability or capacity for the sake of saving ounces.