Built to compete, built to win. Inside the 940 JM Pro, you'll find a durable new gas system, nickel boron-coated internal parts for smooth operation, and a competition-level loading port, elevator, and follower. Outside, an adjustable stock and streamlined forend sport signature Mossberg texturing, while a host of stylized, functional components work together to give you competition-optimized speed, accuracy, and durability.