The AKSA Arms S4 (ATA Arms part no. 12059) is a 12 Gauge tactical semi-auto shotgun built around a dual gas piston system, giving it dependable cycling with a wide range of shell loads. Its 18.5-inch barrel and synthetic stock keep the shotgun short and maneuverable for home defense or tactical training, while a top Picatinny rail and rear ghost ring sight give shooters mounting options and a fast, precise sighting solution. With 5+1 capacity and rugged synthetic furniture, the S4 is built for serious defensive use rather than the clays course.

Key Specifications

• A dual gas piston operating system cycles reliably across light and heavy 12 Gauge loads.
• The 18.5-inch barrel keeps the shotgun compact and easy to maneuver in tight spaces.
• A Picatinny rail provides mounting space for a red dot or other optic.
• Rifle-pattern sights with a rear ghost ring give a fast, precise sight picture without an optic mounted.
• The sight system is fully adjustable, letting shooters dial in point of impact for different loads.
• A durable synthetic stock stands up to hard use in defensive or training environments.
• Rated capacity is 5+1 rounds of 12 Gauge shells.
• Overall length runs approximately 45.5 inches.
• The shotgun ships at approximately 10.9 lbs in a case measuring roughly 9.1 by 3.9 inches in cross-section.

Frequently Asked Questions

What makes the S4 different from the S2? The S4 uses a dual gas piston system and a shorter 18.5-inch barrel for a more compact, tactical-oriented shotgun.

Does it have optic mounting options? Yes, a top Picatinny rail is included for mounting a red dot or other optic.

What sights are installed? Adjustable rifle-pattern sights with a rear ghost ring ship on the gun for fast target acquisition.

Buy the AKSA Arms S4 12 Gauge Tactical Shotgun

For shooters building a home-defense or training shotgun, the S4 pairs a short, maneuverable barrel with dual gas piston reliability and ready-made optic mounting. Browse more ATA Arms shotguns or the full lineup of semi-auto shotguns at Schaefer Defense. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.