Winchester SX4 Extreme Defender 12 Gauge 18.5 in Shotgun

The Winchester SX4 Extreme Defender is a 12-gauge semi-automatic shotgun configured with an 18.5-inch barrel and 3-inch chamber. It features a fixed pistol grip synthetic stock, Picatinny rail, ghost-ring rear sight, and reversible Crossbolt safety for a practical, adaptable setup.

The Active Valve Gas System supports reliable cycling across a wide range of loads. The shotgun also includes an Invector-Plus interchangeable choke system with Full, Modified, and Improved Cylinder choke tubes, along with a choke wrench.

Key Specifications

• The shotgun uses a 12-gauge chambering.
• The action is semi-automatic.
• The barrel measures 18.5 inches and has a stainless steel description.
• The chamber accepts 3-inch shells.
• The listed capacity is 4 shells when using 2.75-inch shells.
• The shotgun uses Invector-Plus flush choke tubes.
• Included chokes are Full, Modified, and Improved Cylinder.
• The receiver includes a Picatinny rail.
• The sights are a front sight with ghost-ring rear sight.
• The stock is a fixed synthetic pistol-grip design with Woodland camouflage and Flat Dark Earth color.

With its compact barrel, adaptable choke system, practical sight arrangement, and optics-ready rail, the SX4 Extreme Defender offers a capable configuration for sporting applications, field use, and range practice. Its gas-operated design and balanced feature set make it a versatile addition to an informed shooter’s collection.

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