Ive been gifted this Hawken style rifle by my Grandfather. It’s in pretty good shape and mechanically sound. I’m not sure who made this though. My guess is that it’s a CVA or maybe pre-CVA Spanish made gun. I can’t find anything on the barrel about country of origin or even caliber. (I measured it’s a 50) seems strange to me none of that is on it just a serial number, proof marks, and the word Hawken. Any help would be appreciated.