Description
The Beretta A400 Xtreme Unico KO 12 Ga 28 Barrel 3.5 Green Alloy Rec Black Synth Stock Blued is a purpose-built, gas-operated semi-automatic shotgun engineered for punishing conditions and heavy loads. It’s the go-to for waterfowl hunters and all-weather shooters who need a reliable, soft-shooting platform that cycles everything from light target loads to 3.5″ magnums without adjustment. This model features a 28-inch barrel, a green anodized alloy receiver, and a durable black synthetic stock.
Key Features
- Unico Gas System: Self-compensating system cycles 2.75″, 3″, and 3.5″ shells without manual adjustments.
- Kick-Off (KO) Plus Technology: Advanced hydraulic damper in the stock reduces felt recoil by up to 70%.
- All-Weather Reliability: Steelium Pro barrel with chrome-lined bore and Aqua Technology surface treatment resists corrosion and fouling.
- Enhanced Ergonomics: Textured grip surfaces, oversized controls, and an optimized loading port for quick reloads in gloves.
- Kick-Off (KO) Plus Technology: Advanced hydraulic damper in the stock reduces felt recoil by up to 70%.
Specifications & Details
| Specification | Detail |
|---|---|
| Gauge | 12 Gauge |
| Chamber | 3.5″ |
| Barrel Length | 28″ |
| Overall Length | 49.2″ |
| Weight | Approx. 7.3 lbs |
| Stock | Black Synthetic with Kick-Off Plus |
| Receiver | Green Anodized Aluminum Alloy |
| Chokes | Includes 3 Beretta Optima-Choke HP (C, IC, M) |
Weighing in at a manageable 7.3 pounds, this shotgun balances quick handling with the stability needed for long days in the marsh. The 28-inch barrel provides a smooth swing for pass shooting, while the overall length of just over 49 inches keeps it maneuverable in a blind. The price point of $1422.12 reflects its premium build and Beretta’s reputation for longevity. It’s available at firearms-missouri.com for Missouri residents and nationwide.
Who It’s For
This is the shotgun for the hunter who doesn’t call it a day when the weather turns. When it comes to late-season geese in a frozen cornfield or ducks in a driving rain, this is the tool you want. It’s built for the waterfowler who runs a mix of shells—maybe 2.75″ for early teal and 3.5″ for honkers—and needs the gun to handle both without a second thought. It’s also a solid choice for turkey hunters who appreciate its corrosion resistance and ability to handle heavy payloads.
Pros & Cons
Pros: Legendary reliability in wet, dirty conditions. The recoil reduction is genuinely significant, making long practice sessions or back-to-back magnum loads tolerable. The versatility to cycle any 12-gauge shell from the lightest target load to the heaviest magnum is a major advantage. The green receiver and black stock offer a subdued, functional aesthetic.
Cons: The Kick-Off system adds some complexity and weight to the stock. The synthetic stock, while ultra-durable, may not appeal to hunters seeking traditional aesthetics. Here’s the thing—it’s a specialized tool, and its value is best realized in the conditions it was designed for.
Frequently Asked Questions
Q: Does it really cycle light target loads reliably?
A: Yes. The A400’s Unico gas system is designed to be self-regulating. It will cycle standard 2.75″ target loads (typically 1 1/8 oz at 1200 fps) right out of the box, no gunsmithing required. This makes it a viable option for clays practice, though its length and balance are optimized for hunting.
Q: What chokes does it use and are others available?
A: It uses Beretta’s Optima-Choke HP (High Performance) system, which is different from standard Mobilchokes. It comes with three (C, IC, M). A wide range of aftermarket HP chokes are available from brands like Briley and Carlson’s for specialized hunting or competition.
Q: Is the Kick-Off system user-serviceable?
A: The Kick-Off Plus hydraulic damper is a sealed unit. While it’s built for long-term durability, if service is ever needed, it should be sent to Beretta or an authorized service center. For routine maintenance, the entire stock can be easily removed from the action for cleaning.
Ready to add this all-weather performer to your gear? The Beretta A400 Xtreme Unico KO is built to handle Missouri’s toughest hunts and is ready for your next season.


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