The front of my receiver is cut right behind the lugs for the barrel shroud so I think it would be easier for me to just make another one. I was thinking about taking a section of solid round bar and making it sort of like the original Suomi receiver front from where it steps down for the bolt snout, all the way to the shroud lugs. I would make it small enough to slide inside the reduced diameter tube and weld it in place. It would be great practice for a real suomi build. Of course With all that work the prexis receiver might start looking real good.