Ok ingo I know nothing about this M1 carbine I just received from my father. I was hoping someone could help me out. What I do know is that it says winchester under the rear sight with serial # 65133**. It has Arlington Ordnance Arlington,Va on the bottom barrel and it has an N on the top of the barrel. It also has the box and paperwork which also say Arlington Ordnance. Is this an import, any idea when it was made???? I know this is not a collectors edition just curious what I have acquired. Thanks for ur help in advance.