The Winchester SX4 Waterfowl Hunter is a 12-gauge semi-automatic shotgun with a 3.5-inch chamber and 26-inch barrel, built specifically for waterfowl use. The 4+1 capacity, Woodland Camo finish, and Inflex Technology recoil pad all point to a gun designed to spend long mornings in a blind or a marsh. 
 

Key Specifications 

• Model: SX4 Waterfowl Hunter 
• Action: Semi-Auto 
• Caliber/Gauge: 12 Gauge 
• Chamber: 3.5" 
• Capacity: 4+1 RD 
• Barrel Length: 26" 
• Overall Length: 47" 
• Weight: 7 lbs. 
• Sights: Truglo Fiber Optic Front Sight 
• Stock/Grip Finish: Woodland Camo 
• Trigger Type: Dropout Trigger 
• Safety Features: Crossbolt Safety 
• Additional Features: 
  • Invector Plus Choke System (includes F, M, IC chokes) 
  • Inflex Technology Recoil Pad 
  • Choke wrench included 
     

Detailed Features 

 
The aluminum alloy receiver keeps weight at 7 lbs despite the 3.5-inch chamber capability. The Truglo fiber optic front sight is visible in low morning light, and the dropout trigger group removes for cleaning, useful after a day in muddy conditions. The Invector Plus choke system takes standard Invector Plus tubes, so you have plenty of aftermarket options. The Inflex recoil pad does a real job on perceived recoil with heavier steel loads.

Owners of the Winchester SX4 Gen2 Camo consistently cite reliability as the gun's biggest strength. It cycles in cold weather, in rain, and with a variety of load types without much drama. The camo pattern works well for waterfowl applications, and the ergonomics (grip angle, cheek position) draw favorable comparisons to more expensive guns.

The common criticisms are weight and price. At 7 lbs it's not a lightweight, and a few hunters note that it tires the arms out on long carry days. The price sits at the higher end of the semi-auto pump segment, which prompts some comparison shopping. Recoil with 3.5-inch loads is noticeable despite the recoil pad. That's physics more than a design flaw, but worth knowing.

For serious waterfowlers who want a reliable 3.5-inch gun that handles various conditions without fuss, the SX4 holds up well.