The Troy Ind SSIGDOARFBT00 Rear Folding BatteleSight Dioptic Black Hardcoat Anodized for AR-15 delivers lightning fast target acquisition with optically engineered dioptic apertures that center your eyes instantly for a clearer target picture, making it an indispensable choice for precision rifle work. Built to exceed military specs and battle-ready in performance, these Troy sights offer two distance settingsup to 300 meters and up to 500 metersgiving you adaptable engagement options in dynamic field conditions. The rear folding design conserves space on the rail while remaining durable and easy to deploy, and the tough black hardcoat anodized finish stands up to the rigors of rugged use. Field-tested and trusted by professionals, the Troy Ind DOA system integrates seamlessly into AR-15 platforms, delivering rapid sight alignment, reliable repeatability, and a natural sight picture that supports fast, instinctive shooting in high-stress scenarios. Ideal for military, law enforcement, and home defense applications, these sights balance rugged engineering with practical versatility, helping you maintain situational awareness and precise aiming without distraction.