The Mossberg 940 Pro Tactical SPX is a semi-automatic shotgun chambered in 12 gauge with an 18.5-inch barrel and a 7+1 round capacity. It has a 3-inch chamber and ships with a Holosun HS407K optic. The synthetic furniture is finished in matte black. 
 

Key Specifications 

• Brand: Mossberg 
• Model: 940 Pro Tactical SPX 
• Caliber: 12 Gauge 
• Action: Semi Auto 
• Capacity: 7+1 
• Barrel Length: 18.5 in 
• Color/Finish: Matte Black 
   

Detailed Features 

• 18.5-inch barrel with 3-inch chamber 
• 7+1 round capacity 
• Includes Holosun HS407K optic 
• Matte black synthetic stock and furniture 
• Optic-ready platform with included red dot combo

Owners of the 940 Pro Tactical SPX tend to praise the reliability of the gas system across a range of loads. The included Holosun HS407K is considered a meaningful upgrade over a basic packaged optic, and most buyers report it zeroing quickly and holding zero through hard use. The matte black synthetic furniture holds up to rough handling without complaint.

Ergonomics are generally positive. The 18.5-inch barrel keeps the package compact and easy to move, and the semi-auto action absorbs recoil noticeably compared to pump variants. Some shooters note the controls feel more deliberate than competition-focused, which splits buyers between those wanting a match-tuned gun and those prioritizing durability.

The SPX trim commands a premium over standard 940 models because of the optic combo, and opinions vary on whether the bundle is genuinely economical or just convenient. Buyers who already own a preferred optic sometimes wish an optic-free version were available at a lower price point.