Description
Beretta slotted the A400 Solo right into the sweet spot of their semi-auto lineup, and this Mossy Oak Original Shadow Grass version is aimed squarely at waterfowlers. At its core is the new B-LINK Pro gas system, which Beretta rates at 36 percent faster cycling and 46 percent cleaner running than their previous gas guns. In practical terms, that means quicker follow-ups when birds are cupped over the decoys and fewer deep cleanings after muddy mornings in the marsh. It digests light 2.75 inch target loads and stout 3 inch magnum duck loads without fuss, and the B-Lok magazine cap twists off with a short turn for fast, tool-free takedown.
Kick-Off Plus Takes the Sting Out
The KO in the name stands for Kick-Off, and this stock carries the upgraded Kick-Off Plus system. Hydraulic dampeners built into the buttstock soak up recoil before it reaches your shoulder, trimming felt recoil by up to 40 percent and keeping muzzle rise in check. Combined with the weather-resistant B-Uffer recoil pad, it makes a long dove opener or a limits-style duck hunt a lot easier on your body. Shims and spacers let you tune cast, drop, and length of pull so the gun mounts where you look.
A Barrel Built for Dense Patterns
The 28 inch Steelium barrel is cold hammer forged with an extended 80mm forcing cone, which smooths pellet transition for denser, more consistent patterns downrange. Up top you get a stepped vent rib with front and mid beads, and the threaded muzzle accepts Beretta's extended OptimaChoke HP tubes, three of which come in the box.
Shadow Grass Camo for the Blind
The synthetic stock and full camo coverage in Mossy Oak Original Shadow Grass disappear against cattails and flooded timber edges, and the aluminum receiver is drilled and tapped if you want to add an optic later. At roughly 7.5 pounds with a 2+1 capacity on 3 inch shells and an ambidextrous-friendly design, the A400 Solo KO carries well, swings smooth, and shrugs off the weather that keeps fair-weather guns at home.
Key Specifications
- Manufacturer: Beretta
- Model: A400 Solo KO
- Manufacturer Part Number: J40SLOSG18
- UPC: 082442072142
- Gauge: 12 Gauge
- Chamber: 3"
- Action: Semi-Auto, B-LINK Pro Gas Operated
- Barrel Length: 28" Steelium Cold Hammer-Forged, Vent Rib
- Capacity: 2+1
- Choke System: OptimaChoke HP Extended
- Recoil System: Kick-Off Plus
- Stock: Synthetic, Mossy Oak Original Shadow Grass
- Sights: Front Bead with Mid Bead, Stepped Rib
- Receiver: Aluminum, Drilled and Tapped
- Safety: Crossbolt
- Weight: Approximately 7.5 lbs
What’s Included
- Beretta A400 Solo KO shotgun
- 3 extended OptimaChoke HP choke tubes
- Choke tube wrench
- Stock shim kit
- Length of pull spacer and extra screws
- Sling swivels
- Gun oil
- Accessory case
- Owner's manual
Frequently Asked Questions
Does the Beretta A400 Solo KO handle 3.5 inch shells?
No, the A400 Solo is chambered for 3 inch shells and everything shorter. Beretta drew that line on purpose, since modern 3 inch steel and bismuth loads cover nearly every waterfowl situation while keeping the gun lighter and softer shooting. If you need a 3.5 inch chamber, that's the A400 Xtreme Plus territory.
How much does the Kick-Off Plus system reduce recoil?
Beretta rates Kick-Off Plus at up to 40 percent reduction in felt recoil. The system uses hydraulic dampeners inside the buttstock that compress under recoil, working alongside the weather-resistant B-Uffer pad. It's a real difference you'll notice by the end of a high-volume day, especially with heavy duck and goose loads.
Can I mount a red dot on the A400 Solo?
Yes. The aluminum receiver is drilled and tapped, and Beretta offers a factory Picatinny rail that fits it. Several aftermarket companies also make low-profile A400 pattern mounts for popular micro red dots, so adding an optic down the road is straightforward.
Will the A400 Solo cycle light target loads reliably?
The B-LINK Pro gas system is designed to run everything from light 2.75 inch target loads up to heavy 3 inch magnums without adjustment. Range testing across hundreds of rounds of light target ammo has shown it to be a dependable cycler, so it doubles nicely as an off-season clays gun.



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