pic1083,, if you really want to get the best updated info on Rugers,, join the RENE.
Do as Doc4429 says.
And if you get the RENE Reference Guide,, it's PRICELESS if you collect the older stuff. Some years back,, they published a "pocket sized" reference guide. (I think they are sold out now.) I use mine when I go to gun shows. In fact a few weeks ago, at a gun show,, a guy had what he described as a "Flattop .22 mag only" gun. I POLITELY had a discussion with him, and he was thankful I did. When he asked if I might know when it was built,, I pulled out the pocket guide,, and showed him the listing in the book. he got a bit of a free education, AND was happy.
While the pocket guide isn't available anymore,, the full sized version is,, and it has allowed me to help folks here a lot when they have questions.
In short,, the RENE is the best thing going if you have a serious interest in Rugers!
I hope my copy of the RENE arrives today!