The Winchester SX4 Waterfowl 20ga semi-automatic shotgun delivers the reliability waterfowl hunters depend on, wrapped in Realtree Max-7 camouflage that keeps you concealed in the marsh. Built on Winchester's proven Active Valve gas-operating system, the SX4 pairs proven mechanics with modern refinements—better balance, oversized controls, and a chrome-plated chamber and bore that'll handle the punishment of a full season. At 28 inches, this barrel strikes the balance most duck hunters prefer for swing and pattern.

Waterfowl hunting means wet, cold conditions and fast moments. Winchester equipped the SX4 with thoughtful details that make a difference: a reversible safety button, larger bolt handle and bolt release for gloved hands, and an Inflex Technology recoil pad to soften the shot. The ventilated rib helps you track moving targets, and the included TRUGLO fiber-optic sight gives you a crisp sight picture in low light—exactly when you need it most.

You get three Invector-Plus choke tubes out of the box, so you can dial in your pattern for different distances and shot situations. The composite stock handles the elements, and the included length-of-pull spacers let you fit the gun to your frame. Sling swivel studs are ready for your favorite carry setup. This is a gun built to work, not just to look good—though the Max-7 pattern will help you disappear in the cattails.

Key Features

• Gas-operated action with Winchester's Active Valve system for reliable cycling
• Realtree Max-7 camouflage finish on receiver, barrel, and stock
• Chrome-plated chamber and bore for durability in wet conditions
• 28-inch barrel with ventilated rib and three Invector-Plus choke tubes included
• TRUGLO fiber-optic sight for low-light visibility
• Inflex Technology recoil pad reduces shot fatigue
• Reversible safety button and oversized controls for gloved operation
• Length-of-pull spacers for proper fit
• Sling swivel studs for carry options

Specifications

Brand	Winchester
Model	SX4 Waterfowl
Gauge	20
Chamber	3 inch
Barrel Length	28 inches
Action Type	Semi-automatic, gas-operated
Receiver	Aluminum alloy
Finish	Realtree Max-7 camouflage
Stock	Composite with length-of-pull spacers
Choke Tubes	Three Invector-Plus (included)
Safety	Reversible button

Frequently Asked Questions

What choke tubes come with this 20-gauge shotgun?

The SX4 Waterfowl ships with three Invector-Plus choke tubes, giving you flexibility to adjust your pattern for different ranges and shot situations in the field.

Is this shotgun suitable for wet, cold waterfowl hunting conditions?

Yes. The chrome-plated chamber and bore are built to withstand the demands of wet-weather hunting, and the composite stock handles seasonal exposure better than wood. The Realtree Max-7 finish is also designed to shed moisture while keeping you concealed.

Can I adjust the length of pull on the SX4 Waterfowl?

The shotgun includes length-of-pull spacers, so you can customize the fit to your frame and shooting style.

What's included in the box?

You receive the shotgun with three Invector-Plus choke tubes, a TRUGLO fiber-optic sight, an Inflex Technology recoil pad, length-of-pull spacers, and sling swivel studs.