The Springfield Armory 1911 Ronin AOS .45 ACP pairs legendary custom-inspired aesthetics with cutting-edge optical compatibility. Engineered as a full-size Government-profile pistol, this model features a beautiful two-tone footprint constructed with a premium forged stainless steel frame and a deep, hot salt blued forged carbon steel slide. Built for a lifetime of rugged service, it houses a 5-inch match-grade forged stainless steel barrel and a traditional barrel bushing setup to ensure premier downrange consistency. The defining layout component of the PX9120LAOS configuration is the integration of the Agency Optic System (AOS). Co-developed alongside Agency Arms, this slide-milled interface uses specific adapter plates with integrated rear sights to mount popular micro red dots incredibly low, ensuring an intuitive sight picture and absolute co-witnessing capability. Complete with a crisp skeletonized trigger, a memory-bump beaver tail grip safety, and hybrid checkered laminate grips, it delivers authentic tactical performance with standard 8-round magazine capacity.