The Springfield Armory 1911 TRP (Tactical Response Pistol) AOS (Adaptive Optics System) in .45 ACP delivers exceptional accuracy, durability, and modern versatility for competitive shooters, tactical professionals, and 1911 enthusiasts. Featuring a 5″ forged stainless steel barrel and frame, this pistol is built for reliability and long-term performance. Optics Ready with AOS System – The patented Adaptive Optics System allows for direct mounting of popular red dot sights (RMR, Holosun, and more) without an adapter plate, ensuring a low-profile, secure fit. The slide is precision-machined for co-witnessing with suppressor-height iron sights. Premium Features for Enhanced Performance – The TRP AOS