Winchester SX4 26" 20ga Shotgun 3" Semi-Auto Matte - 511205691

The Winchester SX4 20-gauge semi-automatic shotgun is a proven hunting platform that builds on decades of Winchester autoloader reliability. This 26-inch-barrel model in 20ga chambers 3-inch shells and is built around a self-adjusting active valve system that cycles everything from light target loads to heavy magnums while managing recoil. It's the gun for hunters who need a versatile, efficient shotgun that handles a wide variety of ammunition without fussing, and for shooters who appreciate ergonomic design when conditions get wet or cold.

The SX4 prioritizes shooter control and comfort in ways that matter in the field. Winchester redesigned the grip and forearm with textured, non-slip panels that work just as well with gloves off as on. Length-of-pull spacers let you dial in the fit for your frame—critical for consistency and reducing felt recoil. The matte black finish resists glare and won't advertise your position to wary birds. Operating controls are oversized and responsive, so you can manipulate the ambidextrous safety, bolt release, and bolt handle even with cold fingers or in low light.

Under the skin, Winchester equipped the SX4 with back-bored barrels and hard chrome-plated chambers to resist wear and corrosion over years of use. The Invector-Plus choke tube system gives you flexibility to match your load and range to the shot pattern you need. Up top, a vented rib and TruGlo fiber-optic front sight provide a clean, confident sighting plane. Quadra-vent ports keep combustion gases in check for smooth, reliable cycling, and the drop-out trigger group makes field cleaning straightforward.

Whether you're hunting upland birds, working a dove field, or shooting clay, the SX4's balance of proven mechanics, user-friendly design, and reliable performance makes it a shotgun you can trust season after season.

Key Features

• Self-adjusting active valve system cycles light to heavy loads with reduced felt recoil
• 26-inch barrel with back-bored technology for optimized, consistent shot patterns
• Invector-Plus choke tube system for pattern flexibility
• Hard chrome-plated chamber and bore resist wear and corrosion
• Textured grip and forearm panels provide secure handling in wet or cold conditions
• Ambidextrous, easily reversible crossbolt safety
• Oversized bolt handle and bolt release for faster operation
• Drop-out trigger group for straightforward field cleaning
• TruGlo long-bead fiber-optic front sight for precise aim
• Vented rib for clean sighting plane
• Length-of-pull spacers allow stock adjustment for proper fit
• Inflex recoil pad directs recoil away from the cheek to reduce flinch and fatigue
• Matte black finish resists glare

Specifications

Frequently Asked Questions

What types of ammunition does the Winchester SX4 20-gauge shoot?

The SX4 chambers 3-inch 20-gauge shells. The self-adjusting active valve system is designed to cycle a wide variety of loads, from lighter target rounds to heavier magnum shells, making it versatile for different hunting and shooting scenarios.

Can I adjust the stock length of pull on this shotgun?

Yes. The SX4 includes length-of-pull spacers that allow you to adjust the stock to fit your frame, helping ensure a proper mount and consistent sight picture.

Is the safety ambidextrous?

Yes, the crossbolt safety is ambidextrous and easily reversible, making it accessible for both right- and left-handed shooters.

What choke tubes does this shotgun use?

The Winchester SX4 uses the Invector-Plus choke tube system, which allows you to swap tubes to match your load and distance for the shot pattern you need.