The updated, optic-ready Mossberg 940 JM Pro Semi-Auto Optic-Ready Shotgun backs up its claim as a top gun for 3-gun competitions. The addition of patent-pending receiver cuts and a removable cover plate allow direct mounting of Shield RMSc-pattern micro dot sights for improved eye alignment and faster target acquisition. Designed in collaboration with World Champion shooter Jerry Miculek, this competition-worthy fast-cycling autoloader boasts a clean-running gas-vent system; nickel boron-coated internal parts for smooth operation; and a high-performance loading port, elevator, and follower. Expect optimized speed, accuracy, and durability from the user-adjustable stock and streamlined forend with Mossberg signature texturing. Built for quad loading, this 940 JM Pro semi-auto shotgun from Mossberg features a quick-empty magazine release, drilled and tapped receiver, HIVIZ TriComp fiber-optic sight, and Briley Choke Tubes. Customize the fit with adjustable length of pull and stock drop system. Mounting for Shield RMSc-pattern micro-dot sights Designed in collaboration with Jerry Miculek Clean-running gas-vent system Nickel boron-coated internal parts High-performance loading port, elevator, and follower Quick-empty magazine release Drilled and tapped receiver HIVIZ TriComp fiber-optic sight