The A400 Solo is Beretta's newest waterfowl autoloader — a ground-up evolution of the A400 platform built around a redesigned B-Link Pro gas system and Beretta's Kick-Off Plus recoil reduction. This configuration wears Realtree Max-7 over a 30" Steelium barrel and a slim, optic-ready aluminum receiver, chambered for 3" 12-gauge shells. Beretta part number J40SLMX10, UPC 082442071695.

B-Link Pro: Faster and Cleaner

Beretta rebuilt the gas system for the Solo. B-Link Pro uses redesigned gas ports and an anti-sticking piston treatment to deliver cycling that Beretta rates at 36% faster than competing systems and 46% cleaner than the outgoing design. For a duck gun that gets shot in cold, wet, dirty conditions and cleaned less often than it should be, the cleanliness number matters as much as the speed. The magazine uses a cross-bolt design with extendable capacity.

Kick-Off Plus and B-Steady

Kick-Off Plus is Beretta's in-stock recoil reduction system, rated at up to 40% reduction in felt recoil. Paired with it is B-Steady, which separates the comb from the pistol grip to stabilize the stock under recoil — keeping the gun's line truer between shots on a flock working the decoys. The B-Uffer recoil pad completes the system at the shoulder.

Steelium Barrel Technology

The barrel is Steelium — cold hammer-forged from a tri-alloy steel containing nickel, chromium, and molybdenum, then vacuum-distended and finished with an 80mm double progressive forcing cone. The long cone eases the shot column into the bore for better patterns and less felt recoil. Beretta eliminated the side ribs on the Solo and uses two reinforced spacers (one at the muzzle, one under the forend), and tops it with a 7x7mm medium step rib.

Built for the Blind

• Optic-ready receiver — drilled and tapped straight from the factory, so a red dot mounts without gunsmithing.
• Enlarged loading port with a competition pro-lifter and loading ramp — faster reloads with cold, gloved hands.
• Oversized bolt handle and bolt release.
• Enhanced reversible safety — configurable for either hand.
• Semi-flat trigger with a crisper pull and shorter reset.
• B-Lok magazine cap — tool-free disassembly, fully closing in a 60-degree rotation.
• Redesigned forend with enhanced grip texture.
• Shim and spacer system for drop, cast, and length-of-pull adjustment.

Beretta A400 Solo J40SLMX10 Specifications

Who This Shotgun Is For

Waterfowl hunters who want the newest thing Beretta builds, in the barrel length that favors long swings on passing birds. The 30" barrel is a deliberate open-country and big-water choice; Max-7 is the pattern for open marsh, flooded rice, and layout hunting where you're hiding against water and cut stubble rather than timber. The optic-ready receiver also makes it an easy build for a red dot, which more waterfowlers adopt every season.

Frequently Asked Questions

Is the A400 Solo the same as the A400 Xtreme Plus?

No. The Solo is a separate, newer model in the A400 family. The Xtreme Plus is chambered for 3½"; the Solo is a 3" gun with the new B-Link Pro system, B-Steady, and an optic-ready receiver.

Will it take 3½" shells?

No. The A400 Solo is chambered for 2¾" and 3" only.

What does "KO" mean in the distributor name?

Kick-Off — specifically Beretta's Kick-Off Plus recoil reduction system, rated at up to 40% felt-recoil reduction.

Can I mount a red dot?

Yes. The receiver ships drilled and tapped and Beretta markets it as optic-ready.