Winchester SX4 28" 12ga Shotgun 3" Semi-Auto Matte - 511205392

The Winchester SX4 is a 12-gauge semi-automatic shotgun built for hunters and sport shooters who demand reliability and handling in the field. This 28-inch barrel model chambers 3-inch shells and delivers the kind of smooth operation Winchester's earned over more than a century—without the weight penalty. At 7 pounds, it's trim enough for a day chasing ducks or upland birds, yet solid enough to stay on target through multiple shots. The composite stock and matte finishes shed weather and glint, while the aluminum-alloy receiver keeps things light without sacrificing durability.

Winchester engineered the SX4's recoil management to reduce felt kick, pairing a textured grip surface with an Inflex 1 recoil pad (small, with hard heel insert) so you stay focused on the shot, not the shoulder. The 14¼-inch length of pull fits most adult shooters comfortably. A fiber-optic front sight cuts through brush and low light, and the ¼-inch rib provides a clean sight plane for consistent aiming. The chrome-plated chamber and bore resist rust and corrosion—important in wet hunting conditions.

Choke flexibility comes standard: the gun ships with Full, Modified, and Improved Cylinder chokes threaded for Winchester's Invector-Plus flush system, letting you tailor patterns for waterfowl, upland game, or clay targets. A flat wrench is included to swap them in seconds. The tubular magazine holds 4 rounds of 3-inch ammunition, and sling swivel studs let you rig it for carry in the field.

If you're looking for a proven, no-fuss semi-auto 12-gauge for hunting or the range—one that balances speed, comfort, and weather-resistant construction—the Winchester SX4 delivers the goods at a weight and price point that makes sense for serious shooters.

Key Features

• Semi-automatic 12-gauge with 3-inch chamber and 28-inch barrel
• Aluminum-alloy receiver and steel barrel keep weight at 7 lbs while maintaining durability
• Fiber-optic front sight for low-light visibility
• Invector-Plus flush choke system: includes Full, Modified, and Improved Cylinder chokes
• Inflex 1 recoil pad with hard heel insert reduces felt recoil
• Textured grip panels for secure handling in wet conditions
• Chrome-plated chamber and bore resist corrosion
• Composite stock and matte finishes shed weather and reflection
• Tubular magazine capacity: 4 rounds
• Sling swivel studs for field carry
• Includes choke wrench for easy swaps

Specifications

Frequently Asked Questions

What chokes come with the Winchester SX4?

The SX4 includes three Invector-Plus flush chokes: Full, Modified, and Improved Cylinder. A flat wrench is provided so you can swap them quickly in the field. The flush design means the chokes sit flush with the barrel muzzle, reducing snag risk and improving aesthetics.

Is the Winchester SX4 28" good for hunting waterfowl and upland game?

Yes. The 28-inch barrel and 3-inch chamber suit both. The included Full choke works well for waterfowl at distance, while the Modified and Improved Cylinder chokes open up the pattern for closer upland work. At 7 pounds, it's light enough for all-day hunting without fatigue.

What's the length of pull, and will it fit me?

The length of pull is 14¼ inches, which fits most adult shooters. If you're particularly tall or short, have the gun shouldered before purchase, or consult a gunsmith about stock adjustments.

Does the receiver and barrel resist rust?

The chrome-plated chamber and bore provide strong corrosion resistance, important in wet hunting. The matte finishes on the receiver and barrel don't shine like polished steel, but regular cleaning and light oiling will keep it in good shape through wet seasons.