The Winchester SX4 Universal Hunter is a semi-automatic 12-gauge shotgun with a 3.5-inch chamber, 24-inch barrel, 45-inch overall length, and a weight of 6.14 lbs. Capacity is 4+1 with 2 3/4-inch shells. The synthetic stock has a Mossy Oak DNA finish. Safety is an ambidextrous crossbolt. The receiver is drilled and tapped for optics. 
 

Key Specifications 

• Brand: Winchester 
• Model: SX4 Universal Hunter 
• Action: Semi-Auto 
• Gauge: 12 GA 
• Chamber: 3.5 inches 
• Barrel Length: 24 inches 
• Overall Length: 45 inches 
• Weight: 6.14 lbs 
• Capacity: 4+1 
• Sights: TruGlo Long Bead Fiber Optic Front 
• Stock: Synthetic, Mossy Oak DNA 
• Safety: Ambidextrous Crossbolt 
   

Features 

 
The active valve gas system cycles a broad range of loads while keeping felt recoil manageable, a practical advantage with a 3.5-inch chamber. Back-bored technology improves shot pattern density. The Invector Plus choke tube system covers most hunting scenarios. Hard chrome-plated chamber and bore resist corrosion and steel shot wear. A ventilated rib gives an unobstructed sight line. The drop-out trigger group removes for cleaning without tools. A larger bolt handle and release button work with gloves on. The drilled and tapped receiver accepts optics mounts. Inflex Technology recoil pad directs recoil energy downward. Length of pull spacers let users tune the stock length.

The SX4 Universal Hunter in Mossy Oak draws consistent positive feedback for cycling reliability, smooth semi-auto operation, and effective recoil management. Hunters use it for both waterfowl and upland applications, and the camo finish is well regarded. The ergonomics (rounded pistol grip, textured surfaces) come up favorably.

On the critical side, some users find the gun a bit heavier than expected, and a few mention that certain ammunition types cycle less cleanly than standard loads. Overall the gun earns solid marks for performance and field versatility.