The Mossberg 940 Pro Waterfowl is a gas-operated semi-automatic shotgun in 12 GA with a TrueTimber Viper Snow camouflage finish. The gas-piston system reduces recoil and cycles reliably through a range of loads. An RMSC optic mount is included for shooters who want to add a red dot. 
 

Key Specifications 

• Manufacturer: Mossberg 
• Model: 940 Pro Waterfowl 
• Gauge: 12 GA 
• Action Type: Semi-Auto (Gas-Operated Piston) 
• Barrel Length: 28 inches 
• Capacity: 12 Rounds +1 
• Weight: 8.25 lbs 
• Sights: HIVIZ TriComp Fiber Optic 
• Chamber Size: 3 inches 
• Finish: TrueTimber Viper Snow Camo 
   

Detailed Features 

• Gas-Piston System: Reduces felt recoil and cycles different load weights without adjustment. 
• Smoothbore Barrel with Adjustable Choke: Adaptable to different shot distances and game types. 
• HIVIZ TriComp Fiber Optic Sights: High-visibility sighting in low light. 
• Optic Ready (RMSC Mount Included): Accepts a red dot sight without additional machining.

The Mossberg 940 Pro Waterfowl in Viper Snow Camo gets positive marks from owners who hunt in snowy or overcast conditions where the pattern blends well. The semi-auto action cycles a variety of loads smoothly, and the adjustable gas system is noted as a practical feature for dialing in performance by load weight.

Stock comfort and grip come up often as positives. A few owners find the 8.25 lb weight noticeable after extended carry compared to lighter semi-autos. Price is flagged as higher than some alternatives, though most serious waterfowl hunters consider the reliability worth it.