Generally there are few problems buying these, they come mismatched sometimes, but they seem to be free of rampant fraud. This one I hope the stock matches because there is one very close to this one that is unit marked. A rifle very close in serial number is listed in the research thread above, it is matching with a unit marking, these two rifles are only 3-digits off. Probably that rifle would be a good candidate for comparison.
I have its pictures, from an GB auction, when you get your rifle post some pictures and I will post up this other rifles pictures for comparison.