Winchester Sx4 Cantilever Buck 20Ga 22 Fr Rs Blk Syn
- Caliber-Gauge:
- 20 Gauge
- Finish-Color:
- Black
- Barrel Length:
- 22"
- Barrel Length Range:
- 22" to 22.99"
The Winchester SX4 Cantilever Buck is a dedicated slug gun built for 20-gauge deer hunters who want a shotgun engineered specifically for that job. This isn't a general-purpose fowling piece pressed into service for buck season—it's a purpose-built rig with a rifled barrel, cantilever scope rail, and ergonomics tuned for precision shooting. If you're serious about slug hunting and want the ballistics and accuracy potential of a dedicated platform, this is the right tool.
The heart of the SX4 Buck is its 22-inch rifled barrel, optimized to shoot both sabot slugs and traditional slugs in 2¾- and 3-inch loads. That shorter profile makes it handy in brush and tight timber, and the matte black aluminum receiver keeps things light—just 7 lbs 4 oz—for an all-day gun. The Weaver-style cantilever rail lets you mount a scope or red dot without wrestling with rail adapters, and the integrated TruGlo fiber-optic front sight with adjustable rear sight gives you a backup option that actually gathers light for quick sight acquisition in low-light ambush situations.
Winchester's Active Valve system cycles the wide variety of slug loads hunters actually use—from light 2¾-inch rounds to full-power 3-inch magnums—while keeping recoil manageable. The InFlex recoil pad directs felt recoil down and away from your face to reduce cheek slap and shooting fatigue during a long sit. A synthetic stock with textured grip panels and drop spacers lets you dial in the length of pull for your frame, and the ambidextrous crossbolt safety works for both left and right-handed shooters. The drop-out trigger group makes field cleaning straightforward when you're back at camp.
At 43 inches overall and 14¼ inches stock length, it's sized for standard adult shooters but adjustable enough to fit different builds. The 4-round magazine capacity (2¾-inch shells) is typical for semi-auto shotguns and gives you four accurate shots if the first doesn't seal the deal.
Key Features
- 22-inch rifled barrel optimized for sabot slugs and rifled slugs in 2¾- and 3-inch chambers
- Weaver-style cantilever rail for scope and red-dot mounting without aftermarket adapters
- TruGlo fiber-optic front sight and adjustable rear sight for low-light aiming
- Active Valve system cycles a wide range of slug loads and reduces felt recoil
- Synthetic stock with textured grip surfaces for secure handling in wet conditions
- InFlex recoil pad directs recoil away from cheek to minimize flinch and fatigue
- Ambidextrous crossbolt safety reversible for left or right-hand shooters
- Drop-out trigger group for field and home cleaning
- Length-of-pull spacers allow stock adjustment for proper fit
- Lightweight aluminum alloy receiver with matte black, non-glare finish
Specifications
| Gauge | 20 |
| Chamber Length | 3 inches |
| Barrel Length | 22 inches |
| Overall Length | 43 inches |
| Length of Pull | 14¼ inches |
| Drop at Comb | 1¾ inches |
| Drop at Heel | 2 inches |
| Weight | 7 lbs 4 oz |
| Magazine Capacity | 4 rounds (2¾-inch shells) |
| Barrel Type | Rifled |
| Receiver Material | Aluminum alloy |
| Stock Material | Synthetic |
| Finish | Matte black |
Frequently Asked Questions
What's the Winchester SX4 Cantilever Buck designed for?
This shotgun is purpose-built for deer hunting with slugs. The rifled barrel, cantilever scope rail, and ergonomic features are specifically engineered for slug accuracy and precision shooting—it's not a general-purpose shotgun adapted to buckshot, but a dedicated platform for the task.
Can I mount a scope on the Winchester SX4 Buck?
Yes. The Weaver-style cantilever rail comes factory-mounted on the barrel, so you can attach a scope, red dot, or low-power variable optic without adapters. It's designed to accept standard rifle-scope rings and accessories.
What slug loads does this shotgun handle?
The Winchester SX4 Buck is chambered for 3-inch shells and features a rifled barrel optimized for both sabot slugs and traditional rifled slugs in both 2¾- and 3-inch loads. The Active Valve system cycles a wide variety of slug ammunition while managing recoil.
Is the stock adjustable?
Yes. The synthetic stock includes length-of-pull spacers that allow you to adjust the gun to fit your frame properly. The stated length of pull is 14¼ inches, and spacers let you tailor it further for comfort and proper shooting position.
Firearm Shipments:
To buy rifles or shotguns, you must be 18 years old, and for handguns, actions, or receivers, the minimum age is 21. By placing an order for this firearm, you confirm that you are the legitimate transferee/buyer, meet the legal age requirements, and comply with all Federal, State, and local laws and regulations necessary to purchase this firearm.
We only ship firearms to valid Federal Firearms License (FFL) holders. At checkout we provide a FFL locator for your convenience.
We will need a copy of the FFL’s license to facilitate the process, kindly request your dealer to email us a copy of their FFL, as we cannot dispatch the firearm until we receive this document. It is imperative for the buyer to choose their FFL dealer, ensure they are willing to facilitate the transfer, and have them email their FFL copy to BOSQUE Outdoors. To avoid any confusion, the customer's name or order number must be mentioned in the email containing the FFL.
Email: [email protected]
- Prior to placing an order, it is the buyer's responsibility to understand and adhere to their state's firearm regulations.
- The buyer should verify with their receiving dealer that the chosen firearm is legally permissible in their state.
- The buyer is accountable for any transfer fees or background check charges imposed by the receiving dealer. If the designated dealer declines to accept the firearm delivery, the buyer assumes responsibility for shipping costs to retrieve the firearm and resend it to an accommodating dealer.
- Handguns will be shipped using air transportation, while long guns can be shipped using ground methods. If your order includes a mix of firearm and non-firearm items, BOSQUE Outdoors will send the firearm(s) to your selected FFL dealer and the remaining non-firearm items to your billing address.
- Firearms cannot be returned to BOSQUE Outdoors; please contact the manufacturer for warranty claims.
- Firearms refused by the FFL Dealer or which cannot be transferred due to a failed background check are subject to a $75 restocking fee plus 10% of the purchase price.

