Looks like the reticle from a GRSC scope:
As for repairing it, if it is in fact a GRSC, you might be able to get it repaired/replaced by them. If it's a knockoff, I'd get out the tools and gut that sucker. If nothing else, you'll get an education on the internal construction of scopes. Best case scenario, you are able to fix it, but lose the internal nitrogen purge that keeps it from fogging up inside when changing temperature.