Description
The Winchester SX4 Cantilever Deer is a purpose-built semi-auto shotgun designed specifically for deer hunters who mount optics on their smoothbores. Chambered in 20 Gauge with a 3-inch chamber, this specialty variant of the proven SX4 platform features an integrated Weaver-style cantilever rail machined to the barrel, giving hunters a rock-solid optics platform that eliminates the stress and point-of-impact shift common with clamp-on and receiver-mounted bases.
Built around a 22-inch barrel with an overall length of 43 inches and a length of pull of 14 1/4 inches, the Cantilever Deer weighs in at 7 lbs 4 oz. Winchester’s proven semi-auto action cycles a full range of slug and sabot loads, fed from a tubular magazine that holds 4+1 rounds of 2 3/4-inch shells. The barrel is finished in non-reflective matte black and is topped with a TruGlo fiber-optic front sight for fast, intuitive target acquisition when running iron.
The stock is a tough, all-weather synthetic in matching matte black, designed to shrug off weather, brush, and the recoil of heavy slug loads. With its optics-ready cantilever rail, dedicated slug-barrel accuracy, and the SX4’s reputation for reliable cycling, the Cantilever Deer is a turn-key solution for hunters who need one shotgun to cover shotgun-only deer zones.
DISCLAIMER: Firearms and receivers are subject to state-specific shipping restrictions and must be transferred through a valid FFL dealer. Please visit our shipping restrictions page to review all applicable restrictions for your state. Subject to change.









