Abstract: The optic attachment for a firearm scope mounts onto the ocular lens end of a scope. The optic attachment for a firearm scope provides a flip-up cap that exposes an corrective lens in the optical path through the scope when the flip-up cap is open and protects the lens at the ocular end of the scope when the flip-up cap is closed. The corrective lens may improve the vision of the shooter, either by providing prescriptive correction or by providing magnification. The flip-up cap may comprise a mirror that can be used in emergency survival situations as a signaling device. An information chart, such as a ballistics chart, may be applied to the mirror and may be removed when use of the mirror is required. The corrective lens may be used as a fire starter by focusing solar rays.