Winchester® SX4™
Fast, versatile and dependable semi-automatic shotgun
When operators need a shotgun that can adapt instantly to changing scenarios, the Winchester® SX4™ delivers. Designed with military and security missions in mind, it combines speed, reliability and user comfort. Whether countering drones, clearing confined spaces, or responding to close-range threats, the SX4™ provides trusted performance where it matters most.
*Winchester® is a trademark registered by Olin Corporation.
Key benefits
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Versatile firepower – accepts both standard 2¾” (70mm) and 3″ magnum (76mm) cartridges, giving flexibility in the field
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Rapid follow-up shots – semi-automatic action ensures fast, continuous fire in critical moments
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Reliable in all conditions – Active Valve gas system automatically adjusts to different ammunition for consistent function
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Built for durability – hard-chromed chamber and bore combined with Cerakote® surface treatment resist wear and harsh environments
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Reduced recoil – Inflex II butt pad absorbs kickback and improves shooter comfort, even during extended use
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Ready for modern optics – compatible with red dot sights for faster target acquisition and improved accuracy
Variants & Options
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Choice of magazine capacities: 6+1 (Compact) or 8+1 rounds (High Capacity)
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Provided with cylinder, 1/4 (IC), 1/2 (M), ¾ (IM) and full chokes
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Barrel lengths from 470 mm (Compact) to 710 mm (High Capacity) for mission-specific adaptability
