--- title: "Rock Island Armory 1911 .45 ACP 13rd Black Pistol" description: "Full-size .45 ACP pistol with black finish, 5.05-inch barrel, 13rd capacity, AOS optics-ready slide cut, and full-length Picatinny rail." canonical_url: "https://www.kygunco.com/product/rock-island-tac-ultra-45-acp-5.05-13rd-black" meta: author: KYGUNCO "og:description": "Full-size .45 ACP pistol with black finish, 5.05-inch barrel, 13rd capacity, AOS optics-ready slide cut, and full-length Picatinny rail." "og:image": "https://cdn.kygunco.com/assets/products/281511/thumbnail.jpg?v=1744808543" "og:image:height": "500" "og:image:width": "500" "og:title": "Rock Island Armory 1911 .45 ACP 13rd Black Pistol" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Guns](https://www.kygunco.com/category/shooting/guns) / [Handguns](https://www.kygunco.com/category/shooting/guns/handguns) / [Semi-Auto](https://www.kygunco.com/category/shooting/guns/handguns/semi-auto) / RCK-57171AOS ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/281511/main.jpg?v=1744808543) For illustration purposes only, this image may not be an exact representation of the product. # ROCK ISLAND TAC ULTRA 45 ACP 5.05" 13rd - Black The Rock Island Armory M1911 A2 Tac Ultra FS HC AOS is a full-size semi-automatic pistol chambered in .45 ACP with a 5.05-inch barrel and 13rd capacity. It features a black finish, AOS optics-ready slide cut, full-length Picatinny rail, extended beavertail grip safety, and a skeletonized hammer and trigger with over-travel stop. See Price In Cart ** 5 interest-free payments of **$163.05** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) As low as **$145.54**/month with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Free Shipping Enjoy delivery to the Lower 48 States at no cost. ** Ships To FFL Dealer Fulfilled by a partner warehouse. ** Partner Fulfilled ** Check Local Restrictions Not sure whether this item can be shipped to your area? Enter your ZIP code for a quick check. Selling fast. Limited quantities available. Item # 281511 Style RCK-57171AOS UPC 850071011050 Condition New Manufacturer [Rock Island Armory](https://www.kygunco.com/brand/rock-island) Model TAC ULTRA Finish Black Round Capacity 13 Caliber 45 ACP Action Semi-Auto Barrel Length 5.05 in The Rock Island Armory M1911 A2 Tac Ultra FS HC AOS is a full-size, semi-automatic pistol chambered in .45 ACP, designed for tactical performance and reliability. Manufactured in Cedar City, Utah, this model reflects Rock Island's commitment to American craftsmanship This pistol features a full-length under-barrel Picatinny rail for accessory attachments, skeletonized hammer and trigger with over-travel stop for enhanced performance, and an extended beavertail grip safety for improved control. Its ergonomic design and reliable performance make it suitable for both professional use and personal defense. - Optics Ready: AOS (Authorized Optics System) slide cut for mounting various optics - Trigger Pull: 4–6 lbs - Frame Finish: Black - Caliber: .45 ACP These features make the Rock Island Armory M1911 A1 Tac Ultra FS a robust and versatile choice for both personal protection and recreational shooting. Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Don't Forget Your Ammo ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/rock-island-tac-ultra-45-acp-5.05-13rd-black#webpage","@type":"WebPage","description":"Full-size .45 ACP pistol with black finish, 5.05-inch barrel, 13rd capacity, AOS optics-ready slide cut, and full-length Picatinny rail.","name":"Rock Island Armory 1911 .45 ACP 13rd Black 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