ATI ATIGKOF123B18 3B 12 Gauge 3.50" 3 Shot 18" Black Vent Rib Barrel, Black Receiver, Wood Stock

The ATI ATIGKOF123B18 is a 12 gauge triple-barrel shotgun purpose-built for home defense and tactical use. With three barrels in a single firearm, this distinctive design delivers multiple shots without requiring a pump, lever, or trigger reset—just aim and fire. The 18-inch barrel length keeps the gun compact and maneuverable indoors, while the 3.5-inch chamber allows you to run both 2.75-inch and 3-inch loads for maximum flexibility in ammunition choice. The black vent rib barrel, black receiver with minimal scroll engraving, and wood stock give it a functional, no-nonsense appearance suited to serious defensive work.

Three-barrel shotguns occupy a unique niche in home defense arsenals. Unlike traditional semi-auto or pump shotguns, you get instant access to three separate barrels and firing mechanisms in one gun—ideal for worst-case scenarios where you want multiple ready shots without mechanical operation. The green fiber optic front sight aids target acquisition in low-light conditions, which is often when a home defense scenario unfolds. All three barrels come equipped with a vent rib for better sight picture consistency.

This is a specialty firearm: it's heavy, it's unconventional, and it rewards shooters who understand its design. It's not a hunting gun or a clay sport shotgun. If you're drawn to three-barrel shotguns for their historical appeal, mechanical simplicity, or defensive redundancy, the ATI delivers genuine capability in a tight package.

Key Features

• Three 18-inch barrels—three independent shots without cycling
• 12 gauge, 3.5-inch chamber handles 2.75-inch and 3-inch ammunition
• Green fiber optic front sight for rapid target acquisition
• Vent rib design on all three barrels
• Black receiver with minimal scroll engraving
• Wood furniture for traditional handling
• Includes three choke tubes for pattern customization

Specifications

Frequently Asked Questions

What ammunition does the ATI three-barrel shotgun use?

It's a 12 gauge shotgun with a 3.5-inch chamber, so it safely handles both 2.75-inch and 3-inch 12 gauge shotshells. The larger 3.5-inch chamber gives you flexibility to use standard ammo or magnum loads.

How do you shoot a three-barrel shotgun?

Each barrel has its own trigger and firing mechanism. You fire one barrel, then move to the next trigger position to fire the second barrel, then the third. There's no pump, lever, or semi-auto cycle—each shot is independent. This design is straightforward but requires familiarity with the gun's layout.

What choke tubes are included?

The ATI ATIGKOF123B18 ships with three choke tubes, allowing you to adjust the shot pattern density for different distances and hunting or defensive situations.

Is this shotgun suitable for hunting?

The 18-inch barrel length and three-barrel design make this a home defense and tactical firearm rather than a hunting or sport shooting gun. Hunters typically choose pump or semi-auto shotguns for lighter recoil management and quicker follow-up shots in field conditions.