The Winchester SX4 Hybrid Hunter is a gas-operated semi-automatic 12-gauge shotgun with a 28" barrel, 3.5" chamber, and 4+1 capacity with 2-3/4" shells. Overall length is 49" and weight is 7.20 lbs. The Mossy Oak Bottomlands / Flat Dark Earth finish covers the composite stock and aluminum alloy receiver. Three Invector Plus choke tubes are included: Full, Modified, and Improved Cylinder. The Inflex Technology recoil pad is standard. Fiber optic front sight. 
 

Key Specifications 

• SKU: 1794001385 
• UPC: 048702016936 
• Brand: Winchester 
• Model Name: SX4 Hybrid Hunter 
• Action Type: Semi-Automatic 
• Chamber Size: 3.5 inches 
• Capacity: 4+1 rounds (2-3/4" shells) 
• Barrel Length: 28 inches 
• Overall Length: 49 inches 
• Weight: 7.20 lbs 
• Finish Color: Mossy Oak Bottomlands / Flat Dark Earth 
• Sights: Fiber Optic front sight 
   

Detailed Features 

 
The gas-operated action cycles rounds without the inertia system's sensitivity to load weight — gas guns typically handle a wider range of loads from light to heavy without cycling issues. The 3.5" chamber handles the full range from light 2.75" target loads to 3.5" steel magnums. Invector Plus chokes are the standard Winchester thread, widely available in aftermarket configurations. The Inflex Technology recoil pad disperses recoil energy across a larger surface and redirects muzzle movement downward, which reduces perceived felt recoil during rapid fire. The aluminum alloy receiver keeps overall weight at 7.20 lbs despite the 3.5" chamber capability. 
 

Usage 

 
Built for waterfowl hunters who want the camo and 3.5" chamber for goose hunting. The 28" barrel is a versatile length that works across waterfowl, upland, and clay shooting. The gas action is well-suited for hunters who want reliable function across light and heavy loads without reconfiguring the gun between seasons.

Owners of the Winchester SX4 Hybrid Hunter in Mossy Oak consistently report reliable operation across a wide range of loads, which is the key selling point of the gas action in a 3.5" gun. Smooth cycling on everything from light 2.75" loads to heavy 3" and 3.5" steel gets positive mentions. The lightweight build at 7.20 lbs for a 3.5" 12-gauge is noted favorably.

The Mossy Oak Bottomlands pattern works well for hunting in wooded and wetland environments according to owners. The ergonomics and stock fit are rated positively, with the Inflex recoil pad mentioned by owners who shoot high volumes of heavy loads.

Price and maintenance frequency come up as the main criticisms. The SX4 sits at a premium price point relative to some competing gas guns, and the gas system requires more regular cleaning than inertia-operated designs, particularly with steel loads which leave more residue. Most owners who follow the cleaning schedule consider performance reliable.