Springfield Armory 1911 Emissary AOS is a 45 ACP semi auto pistol with a 5 in match grade bull barrel and an optics-ready slide built around the Agency Optics System. The Tri-Top slide design adds flat-top serrations to help cut glare while the heavy-profile barrel is intended to support accuracy and reduce muzzle flip. It ships with a cover plate and uses AOS plates that include an integral rear sight for a consistent co-witness height across supported optics footprints.Key Features 45 ACP with 5 in forged stainless steel match grade bull barrel nitride finish (1:16) Agency Optics System (AOS) optics-ready slide; ships with a cover plate Forged carbon steel slide with Black Cerakote finish Forged stainless steel frame with Black Cerakote finish Tritium/luminescent front sight with black serrated rear sight VZ Grips Thin-Line G10 grips Includes (2) 8-round magazinesSpringfield Armory builds modern firearms that blend proven designs with contemporary features for today's shooters. The brand is known for duty-capable handguns and performance-oriented platforms that support optics lights and high-round-count training. Springfield Armory focuses on practical reliability shooter-friendly ergonomics and consistent value across its lineup.