Description
I remember the first time I took a Mossberg 935 Magnum Waterfowl 12 Ga 28″ 3.5″ Synthetic Stock MOSGB out to a blind. The sky was that dull, pre-dawn gray, and the wind was cutting. You know the kind of morning I’m talking about—where you need a shotgun that’s going to work, no questions asked. That’s the story of this gun. It’s built for the days when the weather is the first opponent you have to beat.
The Mossberg 935 Magnum Waterfowl 12 Ga 28″ 3.5″ Synthetic Stock MOSGB is a gas-operated, semi-automatic shotgun designed specifically for high-volume waterfowl and turkey hunting. It reliably cycles a wide range of 12-gauge loads, from light 2¾-inch target shells up to punishing 3½-inch magnums, all housed in a durable, weather-resistant synthetic stock and finish. At its core, it’s a workhorse built to handle the elements and keep you in the field when other guns might choke. I’ve put everything from cheap promotional loads to heavy Bismuth through mine, and its versatility is its strongest selling point. Here’s the thing—for a price of $622.46, you’re getting a dedicated waterfowler that doesn’t require a second mortgage.
Let’s talk about that gas system. Mossberg’s Dual-Valve gas system is the brains of the operation. It automatically adjusts the gas pressure based on the shell you’re firing. That means you can start the morning with light 2¾-inch loads for pass-shooting and, without any adjustment, switch to a 3½-inch magnum goose load when a flock locks up. No tools, no fuss. This is a huge advantage when conditions change fast. The gun is drop-in ready for chokes, too, accepting standard Mossberg Accu-Choke tubes (like the 935 Turkey Pro model uses), so you can pattern it with your preferred ammunition right away.
The 28-inch vent-rib barrel gives you a long, smooth swing for leading birds, and the synthetic stock is built to shrug off marsh muck, rain, and the occasional drop in the boat. The finish is a non-reflective matte that won’t glare and spook wary birds. Weighing in at about 7.5 pounds, it’s light enough to carry all day but has enough heft to soak up recoil, especially from those big 3.5″ shells. The receiver is drilled and tapped for optics, a must for modern turkey hunters, and the oversized safety and bolt release are easy to manipulate with gloved hands.
| Gauge | 12 Gauge (3.5″ Chamber) |
| Barrel Length | 28″ |
| Overall Length | 49″ |
| Capacity | 4+1 (with plug) |
| Weight | Approx. 7.5 lbs |
| Stock | Synthetic |
Pros: Incredibly versatile ammunition cycling. Durable, weatherproof build perfect for harsh environments. The price is very competitive for a dedicated 3.5″-capable semi-auto. The controls are simple and hunter-friendly.
Cons: Some find the forend a bit bulky. Like most gas guns, it requires more frequent cleaning than an inertia system to maintain perfect reliability. It’s a purpose-built tool, so it’s not the most refined choice for clays or upland hunting.
So who is this gun for? It’s for the Missouri waterfowler who spends more time in a layout blind than in a dry stand. It’s for the turkey hunter who wants a reliable, optics-ready semi-auto that can handle heavy TSS loads. It’s for the hunter who needs one shotgun that can do it all in the wet and cold, from ducks to geese, without breaking the bank. This model is available at firearms-missouri.com for Missouri residents and nationwide.
Frequently Asked Questions
Q: Will it cycle light target loads reliably?
A: Yes, that’s the key feature of the Dual-Valve system. I’ve run standard 1-1/8 oz, 2¾” target loads at 1200 fps through mine without a hiccup. For absolute best performance with the lightest loads (like 7/8 oz), keep it clean.
Q: Is it compatible with chokes from other Mossberg models?
A: It uses Mossberg’s standard Accu-Choke thread pattern (like the 500/535/930 series). Tubes from those models will fit, but always pattern your specific choke/load combination for hunting.
Q: What’s the real difference between this and a Mossberg 935 Turkey model?
A: The main differences are the barrel length (28″ vs. 24″ on some Turks) and the finish/camo pattern. The core action, gas system, and reliability are identical. The Waterfowl’s longer barrel is better for swinging on flying birds.
If you need a tough, no-nonsense semi-auto that can handle everything from doves to Canadas, the Mossberg 935 Magnum Waterfowl deserves a hard look. See the full details on our site.


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