Mystery Rifle

I received a batch of photos from a European reader asking if I could identify the gun in them, and I have found myself stumped. The reader thought this might be a G41, but it is not. My first thought, based on its bolt handle, was the Russian Federov, but it is also definitely not that. I suspect it is German based on things like the font of the rear sight markings and other subtle details, but I can’t even be sure of that. Note that the safety selector markings are “S” and “F”, which provides a clue to the language its designers or target market would have used.

Does anyone recognize this weapon?