Description
Picture this: you’re tucked into a Missouri timber edge at dawn, the first flight of doves is about to buzz the sunflower field. You need a shotgun that’s fast, reliable, and fits like it was made for you—not some oversized club. That’s the exact scenario where the Winchester Super X3 Black Field Compact 20 Ga 3″ Chamber 28″ Vent Rib Barrel Invector-Plus Checkered Walnut Stock 4rd shines. I’ve put a few flats of shells through this model over the years, and it’s earned its keep.
So, what is it? The Winchester Super X3 Black Field Compact is a gas-operated semi-auto 20-gauge shotgun built for the field. It features a 3-inch chamber, a 28-inch vent rib barrel with the Invector-Plus choke system, a compact walnut stock for a shorter length of pull, and a 4+1 round capacity. It’s a purpose-driven hunting tool that balances speed and smooth handling.
Let’s talk about that gas system first—it’s the heart of the gun. Winchester’s Active Valve system is self-regulating, which means it handles everything from light 2¾-inch target loads to the stout 3-inch magnums you might use for late-season geese without a hiccup. I’ve run everything from 7/8-ounce skeet loads to heavy #4 buckshot through it, and the action just cycles. The recoil reduction is noticeable, especially on a long day in the duck blind. The gun weighs in at a very manageable 6.8 pounds, which makes it easy to carry and quick to mount.
The fit is where this “Compact” model really separates itself. The stock is cut for a shorter length of pull, which is a godsend for shooters of smaller stature or anyone who prefers a tighter, more controlled mount. It just fits out of the box for a lot of folks. The checkered American walnut is classic, offering a solid grip without being overly glossy. Paired with the 28-inch barrel, you get a setup that swings smoothly but doesn’t feel like you’re wrestling a canoe paddle. The vent rib and mid-bead give you a clean, focused sight plane.
Winchester’s Invector-Plus choke system is a real asset. It gives you the flexibility to pattern your chosen load for different game. The system is widely supported, and tubes from brands like Carlson’s and Trulock are readily available if you want to fine-tune beyond the included chokes. The 3-inch chamber gives you that extra versatility when you need it, though most of my 20-gauge shooting is with 2¾-inch shells. At $928.99, it’s positioned as a serious, buy-once-cry-once hunting shotgun.
| Gauge | 20 Gauge |
| Chamber | 3″ |
| Barrel Length | 28″ Vent Rib |
| Choke System | Invector-Plus (F, M, IC tubes included) |
| Overall Length | Approx. 48.5″ |
| Weight | 6.8 lbs |
| Capacity | 4+1 Rounds |
| Stock | Checkered Walnut, Compact |
Pros & Cons
The pros are clear: incredibly soft-shooting for a 20-gauge, reliable with a wide range of ammunition, and the compact stock is a perfect fit for many hunters right off the rack. The classic walnut and blue finish looks the part in the field. The cons? Well, it’s not the lightest 20-gauge semi-auto on the market—some ultralight models shave off another half-pound. And while the price reflects its quality, it’s an investment. That said, the durability and performance justify it for an active hunter.
Who is this for?
This is for the upland hunter who covers miles for pheasants, the waterfowler who appreciates a softer-recoiling 20-gauge for divers, or the shooter who simply prefers a faster-handling, shorter-stocked shotgun. It’s also an excellent choice for a younger or smaller-framed shooter stepping up from a youth model who needs a gun that will last for decades. It’s available at firearms-missouri.com for Missouri residents and nationwide.
Frequently Asked Questions
Q: Is the “Compact” stock too short for an average-sized adult male?
A: Not necessarily. “Compact” typically refers to a shorter length of pull (around 13.5-13.75″), which many shooters prefer for faster mounting and better control, especially in layers of cold-weather clothing. It’s worth trying one shouldered to see if it fits your build and shooting style.
Q: What’s the difference between Invector and Invector-Plus chokes?
A: Invector-Plus chokes have a longer, more tapered parallel section than the standard Invector. This design often provides more consistent patterns and is the system used on most current Winchester shotguns. Tubes are not interchangeable between the two systems, so be sure you’re buying Plus tubes for the SX3.
Q: Can this gun handle steel shot for waterfowl hunting?
A: Absolutely. The 28-inch barrel is steel-shot approved, and with the appropriate Invector-Plus choke tube (like a Modified or Full), it’s fully capable for waterfowl hunting. Always use choke tubes rated for steel or other hard non-toxic shot.
If this sounds like the fit and performance you’ve been looking for in a field shotgun, you can find the full details and availability on our site. Remember, an FFL transfer is required for all firearm purchases.
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