Went to a gun show this weekend in Oaks, PA. I saw three different rather unique Marlin 336's. Each was at a different dealer and all were in 35 Rem. caliber. All three were factory drilled and tapped for scope mounting but each had been equipped with a side mount scope which resulted in additional holes being drilled in the side of the receiver. The only rational I can see for this is that this mounted the scope high enough so one could use the iron sights as well. Boggles my mind what some people do to their guns.