Winchester SX4 Extreme Defender 12 Gauge 18.5″

The Winchester SX4 Extreme Defender is a versatile 12 Gauge semi-automatic shotgun built for a range of field and defensive roles, from competition stages to woods duty. It is equipped with an 18.5-inch barrel and the self-adjusting Active Valve gas system for consistent cycling across varied loads. The shotgun ships with a synthetic pistol-grip stock in woodland camouflage and includes three Invector-Plus choke tubes for patterning flexibility.

Key Specifications

• The action is Semi-Auto.
• The gauge is 12 Gauge.
• The barrel measures 18.5 inches.
• The overall length is 39.5 inches.
• The weight is 7.12 lbs.
• The stock is synthetic woodland camouflage with pistol grip.
• The capacity is 4- 2.75″ Shells.
• Chokes included are Full / Improved Cylinder / Modified (Invector-Plus).
• The sights are LPA front and ghost-ring rear.
• The receiver is FDE aluminum alloy with Picatinny rail.

Built with reliability and adaptability in mind, the SX4 Extreme Defender combines a hardy FDE Cerakote finish, chrome-plated chamber and bore, back-bored technology, and an Active Valve gas system to handle a broad range of loads. Its optics-ready receiver, three-comb inserts, sling swivel studs and included choke set make it a practical choice for shooters who need a durable, ready-to-configure shotgun for field use, competition, or general utility.

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