I am in the process of purchasing a pc 627 from a guy who has a red dot sight mounted on it. I would like to take this off and install open sights. I would like to get some opinions on different manufactures who make good sights. I would really like something like the three dot night sights that are on my 1911 if someone makes that configuration. I am going to need the whole rear assembly as well as the front blade. Any lists of manufactures and personal preferences would be appreciated.