





Availability: In Stock
Current Stock: Out of stock
The Winchester SX3 20-gauge replacement barrel delivers a purpose-built upgrade for shooters who want to customize their shotgun or repair a damaged tube. This 24-inch barrel is engineered to fit Winchester's Super X3 platform and comes finished in matte blued steel with a brass bead front sight—a no-nonsense setup that lets you focus on your target without glare or distraction. Whether you're working with a field gun, upland hunter, or competition rig, this barrel gives you a fresh foundation for serious shooting.
The barrel ships with a Modified choke and runs the Invector-Plus flush system, so you can swap in your preferred constriction for different loads and game. The 24-inch length strikes a balance between quick handling and pattern control, making it nimble in brush or around decoys while still maintaining effective range. At just over 2 pounds, the tube is light enough that balance doesn't suffer, even on extended hunts.
This is a straightforward, no-frills replacement barrel built to Winchester's established tolerances. If you shoot an SX3 and need a fresh barrel or want to add a dedicated tube for a specific purpose, this is the direct fit you're looking for. The matte finish hides wear and doesn't telegraph movement the way a polished barrel can.
| Gauge | 20 |
| Barrel Length | 24 inches |
| Weight | 2 lbs 2 oz |
| Finish | Matte Blued |
| Material | Steel |
| Rib Width | 1/4 inch |
| Receiver Fit | Winchester Super X3 3" |
| Choke System | Invector-Plus Flush |
| Included Choke | Modified |
| Front Sight | Brass Bead |
Yes, this barrel is designed as a direct fit for Winchester Super X3 receivers chambered in 3 inches. Verify your shotgun's receiver markings to confirm compatibility before ordering.
A Modified choke is included. The barrel uses the Invector-Plus flush system, so you can swap in other Invector-Plus chokes to match your load, distance, and target.
Yes. The 24-inch length and matte blued finish are well-suited to upland hunting, field work, and other game applications. The brass bead front sight and included Modified choke give you a practical starting point for various hunting scenarios.
The barrel is finished in matte blued steel, which reduces glare, hides wear marks, and provides a low-profile appearance compared to polished or shiny finishes.

SKU: 115692533 • Weight: 2.25oz