Mossberg 940 Pro Tactical SPX 12ga 18.5in Holosun 407K

The Mossberg 940 Pro Tactical SPX is a 12 gauge semi-automatic shotgun configured for security and duty applications. It is built around an 18.5-inch barrel and a 3-inch chamber and ships with a Holosun HS407K micro-dot already mounted. The SPX model emphasizes modularity with an optic-ready receiver, M-LOK forend, and integrated heat shield for extended use.

Key Specifications

• Chambered in 12 Gauge for standard 12-ga loads.
• The barrel measures 18.5 inches for a compact tactical profile.
• The chamber accepts 3-inch shells.
• The action is a Semi-Auto autoloading system.
• Includes a mounted Holosun HS407K micro-dot optic.
• The forend provides multiple M-LOK accessory slots and an integrated heat shield.
• Stock is black synthetic and has an adjustable length of pull of 12.5–14.25 inches.
• Equipped with an Accu-Choke system and a cylinder bore choke installed.
• Unloaded weight is approximately 7.25 lbs.
• Receiver is optic-ready with a Shield RMSc footprint and includes adapter plates for RMR, Docter, and Leupold footprints.

Purpose-built for professional and responsible civilian use, the 940 Pro Tactical SPX balances durability, modularity, and user-focused controls. Its optic-ready platform, adjustable synthetic stock, and intuitive ergonomics make it well suited for security teams, range training, and homeowners seeking a capable autoloading shotgun with modern accessory compatibility. The combination of an included micro-dot, M-LOK forend, and a heat-shielded design delivers a practical, adaptable tool for disciplined use.