The Winchester SX4 Waterfowl (brand part no. 511327691) is a semi-auto 20-gauge shotgun built around a 26-inch vent-rib barrel and a 3-inch chamber, finished in Realtree camo for concealment in the blind. Winchester’s Active Valve gas system self-regulates for light and heavy loads alike, so the SX4 cycles reliably across a range of waterfowl ammunition without adjustment. An Inflex Technology recoil pad and textured grip panels cut felt recoil and keep the shotgun controllable through a long morning of pass shooting, while a fiber-optic front sight gives you a fast sight picture on crossing birds. Built for waterfowl hunters who want dependable cycling and genuine concealment, the SX4 Waterfowl ships with three choke tubes and a reversible crossbolt safety.

Key Specifications

• Chambered for 20-gauge shells up to 3 inches, covering standard and magnum waterfowl loads.
• The 26-inch vented-rib barrel gives a fast, natural sight picture on crossing and passing birds.
• A fiber-optic front sight stands out against the sky for quicker target acquisition.
• The Realtree camo synthetic stock keeps you concealed in the blind through wet, cold conditions.
• An Inflex Technology recoil pad redirects felt recoil down and away from your cheek and shoulder.
• Textured grip panels keep the shotgun controllable in wet or gloved hands.
• The reversible crossbolt safety can be set up for right- or left-handed shooters.
• A 4+1 magazine capacity gives you follow-up shots without reloading mid-flock.
• Three included choke tubes (Full, Improved Modified, and Modified) let you match pattern density to the shot.
• A swivel-stud sling mount lets you carry the shotgun hands-free between blinds.

Frequently Asked Questions

What gauge and chamber does the SX4 Waterfowl use? It’s a 20-gauge shotgun with a 3-inch chamber.

How many choke tubes are included? Three choke tubes ship with the shotgun: Full, Improved Modified, and Modified.

Is the safety reversible for left-handed shooters? Yes, the crossbolt safety can be reversed for left-handed use.

Buy the Winchester SX4 Waterfowl Shotgun

The SX4 Waterfowl combines Winchester’s self-regulating Active Valve gas system with genuine Realtree concealment for hunters who need dependable cycling through a long season. Its Inflex recoil pad and fiber-optic sight keep you comfortable and fast on target all morning. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see Winchester‘s full lineup of semi-auto shotguns.