The Rock Island Armory TAC Ultra CS is a compact 1911-platform single-action pistol chambered in 9mm Luger with a 3.62-inch button-rifled barrel, 8+1 capacity, and a steel frame with black Parkerized finish. It weighs 36 oz. 
 

Key Specifications 

• Manufacturer: Rock Island Armory 
• Model: Tac Ultra CS 
• Type: Semi-Auto Handgun 
• Caliber: 9mm Luger (9x19 Para) 
• Barrel Length: 3.62 inches 
• Overall Length: 7.12 inches 
• Weight: 36 oz (2.3 lbs) 
• Capacity: 8+1 rounds 
• Action Type: Single Action Only (SAO) 
• Frame Material: Steel with Black Parkerized finish 
• Slide Material & Finish: Serrated Black Parkerized Steel 
• Grips: Black & Gray G10 
• Sights Configuration: Dovetail front sight with adjustable rear sight 
• Safety Features: Beavertail safety 
   

Features 

The 1911 single-action platform means a consistent trigger pull every shot once cocked. The beavertail grip safety prevents discharge without a full firing grip. G10 grips give a positive hold in varied conditions. The adjustable rear sight over a dovetail front allows windage and elevation correction without replacing sights. At 36 oz the steel frame is on the heavy side for compact carry, but it absorbs recoil noticeably. Button-rifled barrel at 3.62 inches is longer than many compacts in this class, which helps accuracy.

The Rock Island TAC Ultra CS gets generally positive marks, particularly for its value relative to the feature set.

Build quality gets consistent praise — the steel frame feels solid and the overall construction holds up well. Accuracy is frequently highlighted as a strength; the adjustable sights and 1911 trigger combination produce good groupings for most users. The G10 grips are well-liked. Ergonomics for concealed carry get positive feedback from most users despite the steel construction.

Critical points: the 36 oz weight is heavier than polymer-framed compact alternatives, which matters for all-day carry. Trigger pull receives mixed reviews — some find it clean, others want a lighter or shorter reset. Finish wear is mentioned by some owners as appearing sooner than expected. Magazine capacity at 8+1 is lower than modern double-stack 9mm compacts, which is the nature of the 1911 platform in this caliber.