As far as I can find,, no,, no steel ones by Ruger. I've heard of AMT possibily making steel recievers several years ago,, but I've never seen one. Plus,, there was a special order from Ruger for a model KB10/22-RPF by Williams Shooter Supply with a "White" finished reciever according to the RENE guide. Serial number range 255-00741- 255-745, with a possibility of 2000 produced.
Now,, the 10/22 magnum has a steel reciever,,!