The Winchester SX4 Waterfowl Hunter in 20 GA is a semi-automatic shotgun built around a 26-inch barrel, giving it a 47-inch overall length and a weight of 6.14 lbs. It handles both 3-inch and 2-3/4-inch shells and holds 4+1 rounds of 2-3/4-inch shells. 
 

Key Specifications 

• Manufacturer: Winchester 
• Model: SX4 Waterfowl Hunter 
• Caliber: 20 GA 
• Action Type: Semi-Automatic 
• Barrel Length: 26 inches 
• Overall Length: 47 inches 
• Weight: 6.14 lbs (98.24 oz) 
• Capacity: 4+1 rounds (2-3/4" shells) 
• Chamber Size: 3" (accepts both 3" and 2-3/4" shot shells) 
• Finish Color: Woodland Camouflage 
• Stock Material: Composite with textured grip panels 
   

Features 

 
The aluminum alloy receiver wears a woodland camo finish that also protects against harsh field conditions. The TruGlo fiber optic front sight improves visibility at dawn or dusk, and the Inflex technology recoil pad cuts felt recoil noticeably. Length of pull spacers let different-sized shooters dial in their fit. A larger cocking handle and oversized bolt release make cycling straightforward with gloves on. The reversible crossbolt safety accommodates left-handed shooters.

The SX4 Waterfowl Camo in 20 GA gets solid marks from hunters who spend long days in the field. The gun is light and well-balanced, recoil is manageable, and the semi-auto action cycles reliably across a range of loads.

The woodland camo is a consistent favorite -- hunters appreciate that it actually blends into marsh and field cover rather than just looking decorative. The adjustable stock features and the oversized controls for gloved hands come up often as practical, well-thought-out touches.

The SX4 also handles upland game and clay shooting well enough that some owners use it beyond waterfowl season.

On the critical side, a few users have had cycling issues with specific lighter loads, and some find disassembly slightly more involved than other semi-autos. These are not widespread complaints, but worth knowing before purchase.