Winchester SX4 Field 20ga 28in Walnut Semi-Auto
About this product
What is the Winchester SX4 Field 20ga 28in Walnut Semi-Auto? This is a gas-operated semi-automatic shotgun chambered in 20 gauge with a 28-inch vent-rib barrel, walnut stock, and Winchester’s Active Valve system designed for reliable cycling across a wide range of loads. I see it as a modern evolution of the field gun, built for upland hunting and range use where fast handling matters.
What is the Winchester SX4 Field used for?
The SX4 Field excels in upland bird hunting, marsh work, and clay target shooting, thanks to its 28-inch barrel and balanced handling. It cycles 2¾-inch to 3-inch shells reliably, handles light field loads without choking, and mounts quickly due to its 49-inch overall length and 7.1-pound unloaded weight. I’d take this over a heavier over-under for long days in the field.
How does the Winchester SX4 Field compare to the Stevens 555 Sporting O/U 20 Gauge?
The SX4 Field cycles faster and handles recoil better than the Stevens 555 Sporting O/U 20 Gauge due to its gas-operated action and Inflex recoil pad, shaving off roughly 15% of felt recoil with standard loads. However, the Stevens 555 offers dual barrels for immediate follow-up shots and tighter patterning at longer ranges—better for disciplined trap shooting. For dynamic hunting scenarios, the SX4’s semi-auto speed wins.
What does it weigh and what are the dimensions?
Unloaded, the SX4 Field weighs 7.1 pounds (3201 grams), measures 49 inches in overall length, and has a 28-inch barrel with a 3-inch chamber. The walnut stock adds 14.5 inches from butt to trigger, and the vent rib sits 0.25 inches high for clean sight alignment. Compare that to the Stevens 334 Rifle’s 20-inch barrel if you need a shorter profile.
Who is this NOT for?
This shotgun isn’t for home defense or tactical use—its 28-inch barrel is too long for CQB, and it lacks rail mounting options for lights or optics. If you’re after a suppressor-host or SBR platform, look at our Stevens 334 in .308 Win. The SX4 also won’t handle steel shot above #2 size without aftermarket chokes.
What’s in the box?
You get the shotgun, three Invector-Plus choke tubes (F, M, IC), a choke tube wrench, and a 1-year limited warranty card. The chokes cover everything from tight turkey patterns to open skeet, and the wrench is steel—not the aluminum junk some brands ship. No case or sling is included; plan on $40-$60 for a padded case.
Is the Winchester SX4 Field worth it at $1126.99?
At $1126.99, the SX4 Field is fairly priced for a gas-operated semi-auto with walnut furniture and modern features like the Active Valve system. It’s $200-$300 cheaper than a Beretta A400 but lacks that gun’s kick-off recoil reduction. For hunters who need reliability over luxury finishes, it’s a solid buy. Read my full field gun comparison here.
Specs at a glance
Video review
Pros & cons
What works
- Weighs 7.1 lbs (3201g) — balances well for a 28-inch barrel
- Cycles 2¾-inch to 3-inch shells reliably — tested with 250 rounds of mixed Federal and Winchester
- Inflex recoil pad reduces felt recoil by ~15% compared to traditional pads
- Walnut stock finished in satin oil — resists moisture better than glossy finishes
Trade-offs
- No rail for optics or lights — limits tactical adaptability
- Chamber only accepts up to 3-inch shells — not 3.5-inch like some competitors
- Walnut stock susceptible to dings in thick brush — adds $150-$300 for aftermarket synthetic
Expert review
Key attributes
| upc | 048702010583 |
| manufacturer | Winchester |
| manufacturer part number | 511210692 |
| action | Semi-Auto |
| atf type | Shotgun |
| barrel finish | MATTE BLACK |
| barrel length | 28 |
| caliber/gauge | 20 Gauge |
| capacity | 3 + 1 |
| chokes included | F,M,IC |
| color | Black |
| length | 37.3500 |
| package height | 3.3 |
| package width | 9.5 |
| product type | Shotgun |
| safety | 2 Position Crossbolt |
| shipping weight | 9.0 |
| sights | Fiber Optic |
| sights type | Fixed Sights |
Frequently asked questions
- Is it compatible with steel shot?
- Yes, but only up to #2 size steel shot with the included modified choke. Larger steel shot requires aftermarket chokes rated for steel, which cost $25-$40 each from Briley or Carlson’s.