Rock Island 51485 TAC Ultra FS | .45 ACP | 5″ Barrel

The Rock Island TAC Ultra FS model 51485 is a full-size 1911-pattern semi-automatic pistol chambered in .45 ACP with a 5-inch barrel and an 8+1 capacity. It combines a parkerized 4140 steel frame and slide with black-and-gray G10 grips, a full-length under-Picatinny rail, dovetail-mounted fiber-optic front sight and an adjustable LPA-type rear. For mounting a red-dot on the slide or using a co-witnessed setup, an optic such as the Holosun 507C pairs well with this platform and remains under $1,000.

This pistol is well suited to precision-focused range work and action-style pistol competition where a full-size 1911’s sight radius and trigger characteristics are beneficial. It also serves as a solid choice for shooters who prefer a traditional single-action 1911 with modern tactical features.

Product Specifications

• The manufacturer and model are Armscor/Rock Island Armory Rock Island TAC Ultra FS model 51485.
• The caliber is .45 ACP.
• The magazine capacity is 8+1.
• The barrel length is 5 inches.
• The barrel is button-rifled.
• The frame material is steel with a black parkerized finish.
• The slide is finished in black parkerized steel and features serrated cocking surfaces.
• The grips are black & gray G10.
• The front sight is a fiber-optic dovetail and the rear sight is an adjustable LPA-type.
• The frame includes a full-length under-Picatinny tactical rail.
• The action is single action.
• This pistol is part of the Ultra FS series.
• Includes one magazine as an accessory.
• UPC: 4806015514855.

The TAC Ultra FS presents a traditional Series 70-style 1911 that has been outfitted with tactical upgrades such as a full-length guide rod, dovetail-mounted fiber optic front sight, adjustable rear sight and textured G10 grips. The configuration is intended for shooters who want a serviceable, full-size 1911 platform with modern sighting and accessory options.