I like Weaver or egw one piece rails and Burris Signature Zee rings. They are available many places, such as Joe Bob Outfitters. If they are out of stock, most reputable dealers have some sort of way to send you an email when they come back into stock.

If you wish, you can become a paid member and then have access to the classifieds here. Sometimes, but of course, not always, rings and rails are available there.

Look at the stickey at the beginning of this section for information on determining how high your rings should be so your scope clears the barrel.