The AKSA Arms S4 is a semi-automatic 12-gauge shotgun with an 18.5-inch barrel and a 3-inch chamber. It has a 5+1 round capacity and is imported by Four Peaks. The receiver is chrome-plated 7075-T6 aluminum with a black synthetic stock and pistol grip. 
 

Key Specifications 

• Brand: AKSA Arms 
• Model: S4 
• Caliber: 12 Gauge 
• Action: Semi Auto 
• Barrel Length: 18.5 in 
• Capacity: 5+1 
• Color/Finish: Blue/Black 
   

Detailed Features 

• 18.5-inch barrel with 3-inch chamber 
• Chrome-plated 7075-T6 aluminum receiver 
• Black synthetic stock with pistol grip 
• 5+1 round capacity 
• Imported by Four Peaks

Owners of the AKSA Arms S4 tend to focus on the receiver material as a talking point. The 7075-T6 aluminum is a step above what you find on many import shotguns, and the chrome plating is visually distinctive. At the price point, the build quality generally meets expectations for a home-defense-oriented 18.5-inch platform.

The pistol grip configuration divides opinion. Some owners appreciate the compact handling and familiar grip angle; others find it less comfortable for extended range sessions compared to a traditional stock. The synthetic furniture is functional and holds up to handling but does not feel premium.

Value is the main selling point. The S4 competes in an import-heavy segment and owners report it runs common loads without consistent issues, though opinions on reliability with light target loads vary. Aftermarket support is limited given the brand's relatively small presence in the U.S. market.