Mossberg 940 Pro Tactical

About the Mossberg 940 Pro Tactical

The Mossberg 940 Pro Tactical is a gas-operated semi-automatic 12-gauge shotgun designed for home defense and tactical applications. Part of Mossberg's 940 platform that debuted at the 2020 SHOT Show, the tactical variant builds on the foundation established by the competition-oriented 940 JM Pro, which was developed in collaboration with world-renowned competitive shooter Jerry Miculek. The 940 Pro Tactical features an 18.5-inch barrel, 7+1 capacity with 2.75-inch shells (6+1 with 3-inch), and a self-regulating gas system with a redesigned piston and vented spacer that sheds moisture and carbon buildup during cycling. Key internal components including the gas piston, magazine tube, hammer, and sear are nickel-boron coated, allowing up to 1,500 rounds between cleanings. The receiver is cut for Shield RMSc-pattern micro red dot sights and is drilled and tapped for additional mounting options. The shotgun features Mossberg's signature tang-mounted safety, an enlarged and beveled loading port designed for quad-loading, an oversized bolt release, and an extended knurled charging handle. The adjustable synthetic stock accommodates length of pull from 12.5 to 14.25 inches with spacers, and includes interchangeable shims for drop and cast adjustment. The barrel clamp includes M-LOK slots for accessories and sling swivel studs.

The Mossberg 940 platform traces its lineage to the competition shooting world, where Jerry Miculek -- widely regarded as the greatest speed shooter of all time -- collaborated with Mossberg to develop the 940 JM Pro. That competition-proven gas system and reliability formed the foundation for the tactical variant, which brought 3-gun-inspired features like the enlarged quad-load port and extended controls to the home defense and law enforcement market. The 940 Pro Tactical quickly earned a reputation as one of the most reliable and user-friendly tactical semi-auto shotguns available, capable of cycling 1,500 rounds between cleanings.

Mossberg 940 Pro Tactical specifications

The 940 Pro series represents a significant evolution from the earlier Mossberg 930 and 935 models, replacing the pusher-rod gas system with a new piston-and-sleeve design that rides over the magazine tube for cleaner, more reliable operation. The 940 platform was initially launched as the JM Pro competition model in collaboration with Jerry Miculek before Mossberg expanded the line into tactical, field, waterfowl, and turkey variants. The tactical model's enlarged loading port is specifically designed to allow quad-loading straight out of the box, a technique popularized in competitive 3-gun shooting. The trigger breaks at approximately 4.5 pounds with a 3/16-inch travel before reset. The SPX variant includes the optics-ready receiver cut as a standard feature. A Cerakote version is available for enhanced corrosion resistance. The Thunder Ranch collaboration variant features Clint Smith's input on the configuration. Ghost-loading an additional shell onto the carrier brings maximum capacity to 7+1+1 with 2.75-inch shells.