The Rock Island Armory TAC Ultra FS HC AOS chambered in 10mm is a full-size semi-automatic pistol built on a double-stack 1911-pattern frame with a 5-inch barrel and a 16-round magazine capacity. It has an optic cut (AOS) on the slide and polymer grips. The blue/black finish is noted across vendor listings. 
 

Key Specifications 

• Brand: Rock Island Armory 
• Model: TAC Ultra FS HC AOS 
• Caliber: 10mm 
• Action: Semi Auto 
• Capacity: 16 rounds 
• Barrel Length: 5 in 
• Color/Finish: Blue/Black 
   

Detailed Features 

• 5-inch barrel on a full-size double-stack 1911 frame 
• AOS optic cut for direct optic mounting 
• 16-round magazine capacity 
• Polymer grips 
• Blue/black finish

The TAC Ultra FS HC in 10mm attracts shooters who want a high-capacity 1911-style pistol in a more powerful chambering without paying premium prices. Owners generally report solid performance with standard 10mm loads, though some note the pistol benefits from a break-in period before consistent cycling. The polymer grips are functional and provide adequate purchase.

The optic cut is a practical feature for 10mm hunters and outdoors users who want a mounted red dot. The full-size frame handles the 10mm recoil adequately. Some owners find the trigger pull heavier than preferred and choose to replace it. Balance and ergonomics are generally well-regarded among those with medium to large hands.

The value proposition is strong for a double-stack 10mm pistol with an optic-ready slide. Common complaints center on finish quality and the occasional tight fit of factory magazines. The HC AOS configuration offers capability that typically costs more on competing platforms.