I don't believe Ruger sells just the action. Brownell's does carry the barreled action, but before sinking your hard earned money into the barreled action, look around for a good used No. 1. Those No.1 actions are built to last, nearly indestructible, so a used action that is in good shape (especially if you find an early "plum" colored one) are very nice. There's another thread here about the barreled actions, check it out, too.