I traded into a 513t a few weeks ago. I have really enjoyed it. My first gun w peep sights. I wish I could find some instructions on how to set them up. Probably much simpler than I am making it out to be. It shoots better than I do. The Redfield rear and open post front. I have enjoyed shooting it. September 1943. Has all the cartouches and is in overall great shape for a 73 yr old gun that I assume has had lots of hands on it.