The Rock Island Armory Rock Ultra FS is a full-size 1911-style pistol chambered in .40 S&W. Steel frame and slide with a black parkerized finish, G10 grips in black and gray, and a 5-inch button-rifled barrel. The fiber optic front sight and adjustable rear sight make target acquisition fast, and the ambidextrous safety accommodates both right- and left-handed shooters. 
 

Key Specifications 

• Brand: Rock Island 
• Model: Rock Ultra FS 
• Category: Pistols 
• Caliber: .40 S&W 
• Capacity: 8+1 rounds 
• Action Type: Single Action Only (SAO) 
• Barrel Length: 5 inches (Button-Rifled) 
• Overall Length (OAL): 8 inches 
• Weight: 40 oz (2.5 lbs) 
• Frame Material: Steel with Black Parkerized Finish 
• Slide Material: Serrated Black Parkerized Steel 
• Grips Material/Style: Black & Gray G10 
• Sights Configuration: Fiber Optic Front, Adjustable Rear 
• Safety Features: Ambidextrous Safety 
   

Features 

 
The beavertail grip improves comfort during extended shooting sessions and helps with muzzle control during fast strings. G10 panels provide solid purchase even with wet hands. The SAO trigger follows the classic 1911 break, which many competition shooters prefer for its predictability. 
 

Usage 

 
This pistol works well for home defense, IDPA or USPSA competition, and range training. The .40 S&W caliber produces more recoil than 9mm, but the steel frame's weight absorbs a meaningful portion of it. The familiar 1911 platform also makes it a reasonable training pistol for shooters already on that trigger system.

The Rock Island Ultra FS in .40 S&W draws largely favorable feedback from owners, particularly around build quality and value. The steel construction feels solid and has held up well for shooters who put significant round counts through it.

Accuracy is a consistent positive. Many owners report tight groupings at typical handgun distances, which has made it popular for both target shooting and defensive use. Ergonomics get good marks too — the grip fits most hands well and contributes to manageable handling.

The .40 S&W recoil is noticeable, but owners generally say the pistol's weight keeps it in check. Some newer shooters mention a short adjustment period, while experienced .40 shooters find it unremarkable.

Value is where this pistol stands out most in user feedback. Compared to other steel-frame 1911s in the same class, the price-to-performance ratio comes up repeatedly as a reason buyers chose it.

Aesthetics get mixed reactions. Some appreciate the straightforward parkerized look; others find it plain next to more polished competition guns. Aftermarket parts availability is adequate for common 1911 components but is not as broad as some users would like for Rock Island-specific parts. Customer service experiences are uneven across different users.