Scope mounth for FN-49?

[marktx]

It looks like real deal sniper scope mounts for the FN-49 (slide into dovetail on left side of receiver) are very difficult to find and go for quite a bit of money. Apparently there was a company called Echo that made a mount very similar to the military mount back in the 50s but they are nearly as difficult to come by. As far as I can tell the only current manufactures of a scope mount are B-Square and S&K which make similar "no gunsmithing" mounts which attach to the rear sight block. I would prefer something more true to the original design if possible, is anyone aware of a manufacture who might make such a thing?

 

[Vaarok]

Echo was actually a company in Idaho that made sporting rifle scope mounts, the bracket's the exact same. The problem comes with the rings, supposedly.

I think Interordinance had the base bracket for sale.