I think the CRF Mk11 was released earlier than '92-'93, or at least in Oz anyway.
I've just been going over some old hunting productions of mine and came across the very first video that I put on the market.
One of the client hunters is featured on this tape using the stainless synthetic Ruger Mk11 with CRF that I mentioned earlier in this thread.
The copyright date on that tape is 1990, so they were definately available (in Oz) with CRF by late that year.

I cannot recall what year the first Mk11 (non CRF) was released but thought that it was maybe a year or so earlier than '89.
Does anyone know what year the Mk11 first appeared in the Gun Digest listing?