The Winchester SX4 Waterfowl Hunter is a semi-automatic 12-gauge shotgun in Mossy Oak Shadow Grass Blades camo with a 28" back-bored vent rib barrel and an aluminum alloy receiver. It's designed for waterfowl hunters who need reliable cycling across different load types. 
 

Key Specifications 

• Brand: Winchester 
• Model Name: SX4 Waterfowl Hunter 
• SKU: 1794001225 
• UPC: 048702006951 
• MPN: 511206392 
• Action Type: Semi-Auto 
• Chamber Size: 3" 
• Capacity: 4+1 RD (2-3/4" shells) 
• Barrel Length: 28" 
• Overall Length: 49" 
• Weight: 7 lbs 
• Sights: TruGlo Fiber Optic Front 
• Grip Type: Standard Composite with Textured Grip Panel 
• Safety Mechanism: Crossbolt 
• Finish Color/Pattern: Natural Camouflage (Mossy Oak Shadow Grass Blades) 
   

Detailed Features 

The aluminum alloy receiver keeps weight at 7 lbs, which is manageable for a waterfowl gun in this class. The back-bored vent rib barrel has a chrome-plated chamber and bore for corrosion resistance, important for guns that get wet regularly. The Active Valve gas system adjusts based on shell pressure rather than requiring manual adjustment, which means it cycles both target loads and heavy 3" waterfowl loads without swapping parts. 
 
The Invector Plus flush choke system includes three tubes (Full, Modified, Improved Cylinder). The larger cocking handle, bolt release, and trigger guard are designed to be usable with gloves on. TruGlo fiber optic front sight performs adequately in low-light morning conditions. 
 

Usage Scenarios 

• Waterfowl hunting in marsh, flooded field, and open water environments 
• Upland hunting where camo is desired and quick cycling helps 
• Sporting clay events as a field-gun crossover

The SX4 Waterfowl in Mossy Oak camo draws consistent positive feedback from waterfowl hunters. The gas-operated Active Valve system gets credit for cycling reliably through a range of load types without fussing. Hunters running steel or bismuth loads alongside lighter field rounds report few issues.

The camo finish looks good and holds up through a season of normal field use. At 7 lbs the gun is easy to carry through a day of walking, and users frequently describe it as well-balanced with the 28" barrel. The oversized controls are appreciated by hunters in gloves.

Recoil is described as manageable, though a few shooters note that felt recoil during extended sessions is more than some competitors. Price is mentioned as a consideration. The SX4 costs more than entry-level gas guns, and buyers expect a certain level of quality for that money. Most report getting it; occasional fit-and-finish comments suggest minor variation between units. Overall, the SX4 Waterfowl has a strong reputation in its category.