I have talked to a few people on other boards and this may be an after market finish of some type. Don't know if it was done by GSI or an individual. I will hopefully be able to find out something from GSI themselves.

The laminated stock version is the Jagdmatch which was basically a semi-sporter vesion of the SSG with the longer receiver. It came in theL size and I think SL also. Always wanted one of those in .243