The Winchester SX4 Defender is a semi-automatic 12-gauge shotgun built for versatile field and range use. It ships with an 18.5-inch barrel and a 3-inch chamber and uses Winchester’s self-adjusting Active Valve gas system. The rifle-style synthetic pistol-grip stock and optics-ready receiver make it suitable for a range of modern shotgun applications.
Key Specifications
- The shotgun is chambered in 12 Gauge.
- Action type is Semi-Auto.
- The barrel measures 18.5 inches for compact handling.
- The chamber accepts 3-inch shells.
- The magazine capacity is 4 rounds.
- Includes three Invector-Plus choke tubes: F, M, IC.
- The receiver includes a Picatinny optics rail for sights or optics.
- Sight package is LPA front with a ghost-ring rear.
- The stock material is synthetic with a fixed pistol-grip style.
- Finish is Flat Dark Earth Cerakote.
Equipped with Winchester’s Active Valve gas system, interchangeable Invector-Plus chokes, and a pistol-grip synthetic stock, the SX4 Defender is designed for shooters who want a compact, optics-ready semi-automatic shotgun with practical, user-focused controls. Its corrosion-resistant bore and hard chrome-plated chamber, plus the Picatinny rail and ghost-ring sights, provide a balance of durability and modern sighting options suitable for a variety of field and range roles.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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