The Winchester SX4 12ga semi-automatic shotgun in 28" Woodland Camo is a gas-operated waterfowl and hunting platform built around Winchester's proven Active Valve Gas System. If you're working flooded timber, marsh, or mixed habitat where fast, reliable cycling and soft recoil matter as much as pattern consistency, the SX4 combines field-tested performance with classic concealment—no hype, just a shotgun that handles 3.5" loads and delivers the kind of dependability that keeps you in the game when conditions get tough.

The aluminum alloy receiver sits lighter in your hands than steel, while the chrome-plated chamber and bore resist corrosion and steel shot wear—practical details for serious waterfowlers and upland hunters who run their guns hard. The ventilated rib helps you track moving targets, and Winchester equipped the gun with user-friendly controls: a larger bolt handle and bolt release reduce fumbling in heavy clothing, the reversible safety works for both right- and left-hand shooters, and the trigger guard opening gives you room to shoot in gloves. Three Invector-Plus choke tubes give you flexibility to dial in your pattern, and the Truglo fiber-optic sight makes acquiring targets faster in low light.

Winchester redesigned the recoil experience too. The new Inflex Technology pad softens felt kick without sacrificing reliability, and length-of-pull spacers let you fit the gun to your frame. Sling swivel studs are already threaded in. This is the kind of refinement you get when a proven design—the SX3's gas system—gets refined by engineers who actually hunt and shoot.

Key Features

• Active Valve Gas System for reliable, fast cycling across a range of loads
• Aluminum alloy receiver with Woodland camouflage finish for lightweight, concealed hunting
• Chrome-plated chamber and bore for corrosion resistance and steel shot durability
• Ventilated rib for improved target acquisition
• Larger bolt handle and bolt release for easier manipulation in cold or heavy clothing
• Reversible safety button works for right- and left-hand shooters
• Inflex Technology recoil pad for soft shooting and reduced fatigue
• Three Invector-Plus choke tubes (included) for pattern customization
• Truglo fiber-optic sight for low-light target pickup
• Length-of-pull spacers for custom fit
• Sling swivel studs pre-installed

Specifications

Gauge	12
Action Type	Gas-operated semi-automatic
Chamber	3.5"
Barrel Length	28"
Receiver Material	Aluminum alloy
Finish	Woodland camouflage
Stock	Composite
Sight	Truglo fiber-optic
Included Chokes	Three Invector-Plus (FMIC)

Frequently Asked Questions

What is the Winchester SX4 best suited for?

The SX4 is built for waterfowl and upland hunting, especially in environments where Woodland camouflage concealment and reliable autoloading are priorities. The gas-operated system handles the full range of 3.5" loads, and the soft-shooting design helps with follow-up accuracy and reduces shooter fatigue over a long day.

Can I use 3" shells in the 3.5" Winchester SX4?

The SX4 is chambered for 3.5", which is the specification provided. For compatibility questions specific to your ammunition, contact Winchester or consult the manual.

What choke tubes come with this shotgun?

Three Invector-Plus choke tubes are included, allowing you to adjust pattern and coverage for different hunting conditions.

Is the safety button reversible for left-handed shooters?

Yes. The SX4 features a reversible safety button, making it accessible for both right- and left-hand shooters without modification.