I've got an M1 with a dark reddish brown stock on it stamped AAM and cross cannons and inside the sling groove is stamped "O-RMC". Can anyone tell me what this means? I believe I have an underwood reciever, a saginaw barrel, and whatever stock this is. I paid 800 for it but I may have paid too much. This gun is sort of a way to reconnect with my grandfather. Thanks for any help guys!
John