Description
Mossberg 940 JM Pro 12 Gauge
The Mossberg JM 940 Pro Shotgun with drilled & tapped aluminum receiver; 24” vent rib barrel; 3” chamber; Briley Ext Set choke; clean-running gas vent system; fiber optic front sight; 13″-14.25″ adjustable length of pull (LOP); black synthetic stock; 9-round magazine; quick-empty magazine release; and 44.75” overall length.
The 940 JM Pro is a pump action shotgun built to compete and win.
A new durable gas system; nickel boron-coated internal parts for smooth operation; and a competition-level loading port, elevator, and follower, are what you’ll find inside this Mossberg 940 JM Pro for sale at Mister Guns.
Coming to the exterior, there’s the adjustable stock and streamlined forend both of which sport Mossberg signature texturing; while a host of stylized, functional components combine for competition — optimizing speed, accuracy, and durability.
Built for quad loading, the Mossberg JM Pro 940 also features a quick-empty magazine release, a clean-running gas-vent system, Briley choke tubes, and a HIVIZ TriComp fiber optic sight for faster target engagement.









