The Winchester SX4 20 Gauge Shotgun (Winchester part no. 511205690) is a semi-automatic hunting shotgun with a 24-inch barrel and a 3-inch chamber. It follows the Super X3 Black Shadow with a redesigned grip, a larger bolt handle and bolt release, and a non-glare matte black finish over a synthetic stock and forearm. A fiber optic front sight on a ventilated rib gives a clean sight picture, and three Invector-Plus Flush chokes let you tune the pattern. At 6 pounds 8 ounces, it is a quick-handling upland and field gun.

Key Specifications

• The gauge is 20 gauge, a lighter-recoiling bore that suits all-day carry.
• The chamber is 3 inches, so the gun runs 2-3/4-inch and 3-inch shells.
• The barrel is 24 inches, a short length that moves quickly in cover.
• Magazine capacity is four 2-3/4-inch shells in a tubular magazine, as listed by Winchester.
• The action is semi-automatic, with a self-adjusting Active Valve system and a drop-out trigger group.
• Weight is 6 pounds 8 ounces, light enough for all-day carry in the field.
• Overall length is 45 inches, with a 14-1/4-inch length of pull.
• Three Invector-Plus Flush chokes (full, modified and improved cylinder) are included, along with a flat choke wrench.
• The front sight is a fiber optic bead on a vent rib, which helps you pick up the target quickly.
• The stock and forearm are composite synthetic with textured grip panels and an Inflex 2 recoil pad, and the receiver is matte black aluminum alloy.

Frequently Asked Questions

What chokes does the SX4 20 gauge ship with? It includes three Invector-Plus Flush chokes: full, modified and improved cylinder, plus a flat choke wrench.

What shells will it run? The 3-inch chamber accepts both 2-3/4-inch and 3-inch 20 gauge shells.

Is the safety reversible? Yes. Winchester lists a reversible crossbolt safety on the Super X4 line, along with an oversized bolt handle and bolt release button.

Buy the Winchester SX4 20 Gauge Shotgun, 24-Inch Barrel, Matte Black Synthetic

The 24-inch SX4 keeps the line’s back-bored barrel and non-glare black finish in a shorter, lighter package that is easy to swing in tight cover. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more semi-auto shotguns while you are here.