post a picture of the whole receiver, with the rear section as well. if this is what i think it is...yikes.
i belive this is a national Ord or Santa Fe arms cast POS. that someone has remarked, and reserialed to fake someone out.
the ridge on a real Remington is longer, and not as sharp at the edge.
ill be able to tell if i can see the rear bridge ahead of the rear sight.