Winchester SX4 Defender 12ga 18.5″ 3″ Chamber Woodland/FDE

About this product

The Winchester SX4 Defender is a compact, semi-automatic 12 Gauge shotgun built for versatility across defensive, upland, and competition contexts. It pairs a compact 18.5-inch barrel with a 3-inch chamber and a Woodland camouflage synthetic stock with a Flat Dark Earth (FDE) finish on the receiver. The design incorporates an Active Valve gas system and back-bored technology to improve cycling reliability across a broad range of loads.

Key Specifications

• The action is Semi-Auto for rapid follow-up shots and consistent cycling.
• The gauge is 12 Gauge for broad ammunition compatibility.
• The barrel measures 18.5 inches for compact handling in confined environments.
• The chamber accepts 3-inch shells for extended ammunition capability.
• The listed capacity is 4 (2.75″ shells) in the standard configuration.
• The stock is synthetic with Woodland camouflage and includes a pistol-grip style for control.
• The receiver is an FDE aluminum alloy with a Picatinny optics rail.
• Sights are an LPA front and ghost-ring rear arrangement for rapid sight acquisition.
• Chokes included are Full / Modified / Improved Cylinder (Invector-Plus flush type).
• Operating system is a self-adjusting Active Valve gas system with chrome-plated chamber and bore.

The SX4 Defender combines compact dimensions and practical features to serve a range of field and defensive roles. Its configuration — compact barrel, robust gas system, ghost-ring sights, and included choke set — makes it a flexible platform for users who value reliable operation and straightforward ergonomics.

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