Dont know much about this scope other than they don’t come around very often. I’ve read they were used on the Armalite 180. From my information scope was purchased at a gun show in San Antonio many yrs ago and been sitting in a closet since then. The owner past away about two yrs ago and his son found it when cleaning out the house. Optics are clean and clear. Cross hairs are good with a larger cross hair on top half.