There was a period about 20 years ago where you could still get these for ~$1k and it some people wanted them as the base for their custom gun because of the whole "nazi battle rifle" mystique.
There's one I've seen pictures of that resurfaces now and again where the stock was cut off and replaced with an MP40 underfolder and the barrel shortened down as well. I forget at this point if it was all the way down in SBR territory or if it was aping the other early 2000s WW2 rifle fad - the "tanker" conversion.