@Napoleonicus
I found this just now and thought it might interest you as it’s Ross related. The Huot Automatic Rifle. With the Ross being removed from general issue for frontline troops, the Canadians had lots of spare Ross’ laying around and a serious shortage of light machine guns. A certain Mr. Huot decided to make a prototype automatic rifle conversion of the Ross, it was tested by the British and found to be a suitable weapon with only some easy to fix issues. The war ended before they could go into production, leaving only the few prototypes as it’s legacy.