Description
Weatherby put real thought into the Sorix, and it shows the moment you pick one up. This 20 gauge version runs an inertia-driven action that Weatherby spent years tuning, so it cycles everything from light small game loads up to heavy 3 inch magnums without fuss. Inertia guns are also about as easy to maintain as a semi-auto gets, since there's no gas system dumping carbon into the works. At around 6.5 pounds with a 28 inch vent rib barrel, this one carries easily on long walks to the blind and swings smooth on crossing birds.
Built for Cold Hands and Left-Handed Hunters
The Sorix stands out for its controls. The oversized bolt release, which Weatherby calls the slammer button, and the big charging handle are simple to run with wet or gloved hands, and the receiver has an aggressive competition-style cut that makes reloads faster. Then there's the SHIFT system, which lets you move the charging handle and safety to the left side for a true left-handed setup. If you shoot southpaw or hunt with someone who does, that's a feature you won't find on most field guns.
The Midnight Marsh Finish
Each stock is hand painted in the Midnight Marsh pattern, a dark wetland-inspired look that pairs with Cerakote on the receiver, barrel, and top rib. Cerakote shrugs off moisture and abuse far better than traditional bluing, which matters when your mornings involve mud, spray, and wet dog. The synthetic stock has textured grip points, a soft comb piece that's easy on your cheek, and an included shim kit so you can adjust drop to fit how you mount the gun.
Chokes and Setup Out of the Box
Weatherby uses the Benelli Crio Plus choke pattern here and includes five tubes: cylinder, improved cylinder, modified, improved modified, and full, plus a wrench and a carrying case. That covers everything from decoying ducks to pass shooting without buying another thing. The receiver is also drilled and tapped with 8-40 holes if you ever want to add an optic for turkey duty.
Key Specifications
- Manufacturer: Weatherby
- Model: Sorix Midnight Marsh
- MPN: XMM2028MAG
- UPC: 747115454655
- Gauge: 20 Gauge
- Chamber: 3"
- Action: Semi-Auto, Inertia Operating System
- Barrel Length: 28" Vent Rib
- Barrel Finish: Black Cerakote
- Capacity: 2+1
- Stock: Synthetic, Hand-Painted Midnight Marsh, Adjustable Shims
- Choke System: Benelli Crio Plus
- Chokes Included: Cylinder, Improved Cylinder, Modified, Improved Modified, Full
- Overall Length: 49"
- Length of Pull: 14.3"
- Weight: 6.5 lbs
What’s Included
- Weatherby Sorix Midnight Marsh 20 gauge semi-auto shotgun
- 5 Crio Plus choke tubes (C, IC, M, IM, F)
- Choke tube wrench
- Choke tube carrying case
- Stock shim kit
- Owner's manual
Frequently Asked Questions
Can the Weatherby Sorix be set up for left-handed use?
Yes, and it's one of the best features of this gun. Weatherby's SHIFT system lets you swap both the charging handle and the safety to the left side, giving you a genuinely left-handed shotgun instead of just tolerating a right-handed one. It's a quick change you can do at home without a gunsmith.
Will the Sorix 20 gauge cycle light target loads?
Weatherby spent years tuning the spring rates on this inertia action specifically so it would run a wide range of ammo, from lighter small game and target loads up to heavy 3 inch magnums. Like any inertia gun, it appreciates a firm shoulder mount, but it's built to handle the full spread of 20 gauge loads.
What choke tubes does the Weatherby Sorix Midnight Marsh use?
It uses the Benelli Crio Plus choke pattern, which is great news since those tubes are widely available in aftermarket options. Five chokes come in the box: cylinder, improved cylinder, modified, improved modified, and full, along with a wrench and a case to keep them organized.
Can I mount an optic on the Sorix?
Yes. The steel receiver comes drilled and tapped with 8-40 holes from the factory, so you can add a base and mount a red dot for turkey hunting or any other application where an optic helps. For wing shooting, the vent rib gives you a clean, fast sighting plane as is.




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