The Rock Island Armory TAC Ultra FS HC pistol in 10mm with a 5-inch barrel (brand part no. 57179AOS) is a high-capacity, double-stack 1911-pattern build, pairing full-power 10mm performance with a deep 16-round magazine. Armscor/Rock Island Armory optic-ready cuts the slide for red dot mounting, and the barrel’s 1-in-16-inch rate of twist suits standard 10mm loads well. Fixed sights keep the profile simple and reliable, and the single-action trigger delivers the crisp, short pull 1911 shooters expect even in this double-stack configuration. Among high-capacity 10mm semi-auto handguns, this TAC Ultra FS HC configuration favors shooters who want deep 10mm capacity with 1911 ergonomics.

Key Specifications

• Chambered in 10mm.
• Capacity of 16+1 rounds.
• The barrel measures 5 inches, with a 1-in-16-inch rate of twist.
• The slide is optic-ready.
• The sights are fixed.
• The action is single action, the traditional 1911 trigger system.
• Ships with one 16-round magazine.
• Shipping weight of approximately 4.5 pounds.
• The frame and slide are machined from 4140 ordnance steel, with G10 grip panels.

Frequently Asked Questions

What is the magazine capacity? 16+1 rounds of 10mm, a high-capacity double-stack configuration.

Is the slide cut for a red dot optic? Yes, the slide is optic-ready for direct-mount compatibility.

Buy the Rock Island Armory TAC Ultra FS HC Pistol

Deep 10mm capacity with 1911 ergonomics is exactly what this TAC Ultra FS HC delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.