Winchester SX4 Defender | 12 Gauge | 18.5in | FDE

The Winchester SX4 Defender is a compact, autoloading 12-gauge built for versatility and reliable cycling across a range of loads. It pairs an 18.5-inch barrel with Winchester’s Active Valve gas system and the Invector-Plus choke tube family to deliver consistent patterns and fast follow-up shots. The synthetic Flat Dark Earth stock and FDE Cerakote on the barrel and receiver provide durable weather resistance and a modern aesthetic. This configuration is suitable for competitive shotgun sports and field turkey hunting.

Product Specifications

• The manufacturer is Winchester.
• The model is the SX4 Defender.
• The action type is Semi-Auto.
• The gauge is 12 Gauge.
• The barrel measures 18.5 inches for compact handling.
• The overall length is 39.5 inches.
• The capacity is 4 (2.75″ shells).
• The chamber size accepts 3″ shells.
• The finish is Flat Dark Earth Cerakote on the barrel and receiver.
• The stock material is synthetic and the stock color is Flat Dark Earth.
• The receiver is FDE aluminum alloy with a Picatinny optics rail.
• The sighting system is LPA front sight and rear ghost-ring.
• Included choke tubes are Full, Improved Cylinder and Modified (Invector-Plus).
• The operating system is a self-adjusting Active Valve gas system for reliable cycling.
• The UPC is 048702026430.

The SX4 Defender balances compact dimensions with the features expected from a modern autoloading shotgun: interchangeable Invector-Plus chokes for pattern tuning, a Picatinny rail for optics, and a durable FDE finish. Its ergonomics and stock design make it straightforward to mount and operate in dynamic situations while remaining practical for sporting use.

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