Winchester SX4 Cantilever Buck 12 Gauge 22-inch

The Winchester SX4 Cantilever Buck is a purpose-built 12 Gauge semi-automatic shotgun designed around a 22-inch fully rifled barrel for use with sabots and slugs. It features a matte black aluminum receiver, a black synthetic field stock with improved ergonomics and an Inflex recoil pad, and a Weaver-style cantilever rail for optics. The shotgun is fitted with a TruGlo fiber-optic front sight and an adjustable rear sight to support fast, repeatable sighting. The action incorporates a drop-out trigger group and an active valve system to cycle a range of loads reliably.

Key Specifications

• The gauge is 12 Gauge.
• The action is Semi-Auto.
• The barrel length is 22 inches.
• The barrel is described as fully-rifled.
• The chamber accepts up to 3″ shells.
• The stock material is synthetic with a black finish.
• The overall length is 43 inches.
• The listed weight is 7 lbs 8 oz.
• The sighting system is TruGlo fiber-optic front with adjustable rear and includes a Weaver-style cantilever rail.
• The shotgun features a drop-out trigger and an ambidextrous crossbolt safety.

Built to provide a dedicated option for slug and buckshot applications, the SX4 Cantilever Buck pairs a rifled 22-inch barrel with an optic-ready cantilever rail and reinforced ergonomics for consistent performance in the field. Its combination of an ambidextrous safety, active valve system and Inflex recoil pad reduces felt recoil while maintaining reliable cycling across a variety of loads. The design balances handling and sighting flexibility for hunters who prioritize a purpose-designed, optics-capable 12 Gauge platform.