There wasn't just one US company which "refurbished" the British Victories. An unknown number of US surplus arms dealers imported them in the 1950s-60s, then had them modified by whoever they could find to do the work the cheapest. The details on just how the business of butchering the old British Victories was done and by whom are murky. There was a posting here several years ago by someone who claimed to have worked at a machine shop that was converting the British Victories for an importer, but he did not provide much detail. I requested that he would be doing us a service if he could write up more information about his experience, but he never did. At least not that I saw.