# Winchester SX4 20GA Semi-Auto Shotgun, Matte Black, 24" Barrel

**Brand:** Winchester
**Category:** Semi-Automatic Shotguns
**Caliber:** 20 Gauge

## Specifications

- **Caliber:** 20 Gauge
- **Barrel Length:** 24"
- **Capacity:** 4 rounds
- **Finish:** Matte
- **Weight:** 8 oz
- **Overall Length:** 45"
- **UPC:** 048702009945
- **SKU:** UCr9wfZR

## Description

The Winchester SX4 in 20 gauge is a gas-operated semi-automatic shotgun with a 24-inch barrel and matte black finish. It uses the Active Valve gas system, which Winchester designed to cycle reliably across a wide range of shell lengths and loads without manual adjustment.

### Key Specifications
- **Model**: SX4
- **Gauge**: 20 GA
- **Action**: Semi-Automatic
- **Barrel Length**: 24 inches
- **Capacity**: 4 rounds (2-3/4" shells)
- **Weight**: 6.75 lbs.
- **Finish**: Matte Black

### Detailed Features

The Invector-Plus Flush choke system includes three chokes (Full, Modified, and Improved Cylinder), which cover the range from tight patterning for waterfowl to open patterns for upland birds or clays. The front sight is a fiber optic bead that is easy to pick up in low-light conditions. The Inflex recoil pad compresses under recoil to redirect the push downward rather than straight back, which reduces muzzle flip. The receiver is aluminum alloy; the barrel is steel with a matte black finish.

At 6.75 lbs the SX4 is on the lighter end of 20-gauge semi-autos, which makes it easy to carry in the field but also means it cycles the felt recoil through a lighter platform than heavier guns.

### Usage Scenarios

The SX4 in 20 gauge is suited for upland hunting, waterfowl hunting with 3-inch shells (the gun is 3-inch chambered), and clay target sports including skeet and trap. The 24-inch barrel is a common upland length that balances swing weight and handling in tight cover.

## Frequently Asked Questions

**Q: What gauge is the Winchester SX4?**

A: The SX4 is chambered in 20 gauge.

**Q: What is the barrel length of the Winchester SX4?**

A: It has a 24-inch barrel.

**Q: How many rounds does the Winchester SX4 hold?**

A: It holds 4 rounds of 2-3/4" shells.

**Q: Who makes the SX4?**

A: The SX4 is made by Winchester.

**Q: What type of firearm is the Winchester SX4?**

A: It is a gas-operated semi-automatic shotgun with an aluminum alloy receiver and matte black finish.

**Q: What chokes does the Winchester SX4 include?**

A: It comes with three Invector-Plus Flush chokes: Full, Modified, and Improved Cylinder.

**Q: Where can I buy the Winchester SX4?**

A: Compare current vendor offers on this page.

## What Reviewers Say

*Quoted verbatim from YouTube reviews. Each link opens the video at the moment quoted.*

> I've shot a beta before and I didn't necessarily care for it as much as I like this one this one seems a little bit more Sleek a little lighter weight and it swings a little bit better.
>
> — [Outdoor Limits](https://www.youtube.com/watch?v=QD7GWDlY6hk&t=64s)

> This was one of the first sx4's and this had an issue with the uh charging handle so this is an aftermarket charging handle because the original one fell out when I was turkey hunting nowhere to be found.
>
> — [Outdoor Limits](https://www.youtube.com/watch?v=QD7GWDlY6hk&t=199s)

> It's it's been neglected but it still works great.
>
> — [Outdoor Limits](https://www.youtube.com/watch?v=QD7GWDlY6hk&t=508s)

## What Customers Say

*AI-generated insights from customer reviews*

Owner feedback on the Winchester SX4 in 20 gauge is largely positive, with a few practical caveats.

The weight and handling get frequent mentions. At 6.75 lbs it carries easily through a full day in the field, and most owners describe the balance and swing as natural for upland or clay shooting.

Reliability is a common positive. Most owners report smooth, consistent cycling across a variety of shell types, including lighter target loads. A small number of owners note that very light or low-base shells occasionally cause a short cycle, which is common for gas-operated semi-autos set up to run heavier hunting loads.

The Inflex recoil pad is appreciated, especially by shooters moving up from a 12 gauge or those with recoil sensitivity. Felt recoil is consistently described as mild for a 20 gauge semi-auto.

The choke system and fiber optic front sight both get positive marks for being practical and functional out of the box.

Price relative to competition is the most-discussed criticism. A few owners feel the SX4 asks slightly more than comparable semi-autos from other brands at similar feature levels, though most consider the quality justifies it. Occasional comments also mention that certain aftermarket chokes do not fit the Invector-Plus thread pattern without adapters.

## Pricing

**4 offers available**

| Vendor | Price |
|--------|-------|
| Grabagun Com | $907.99 |
| Primaryarms Com | $929.99 |
| Buds Gun Shop | $935.99 |
| Guns Com | $999.99 |

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*Data from [GunsNation](https://gunsnation.com)*