Neighbor across the street brought one over last week, says he bought it about 40 years ago and has never taken it apart to clean. Wanted to know if I knew how, well, I told him I never had taken one apart but haven't found one yet I couldn't figure out. Long story short, they are a little tricky to get back together but I can say his is now very clean and together again. Very nice pistols, over built and made to last. Glad he brought it over.