7.62mm barrel question, possible L8?

[XL39E1]

Original Enfield L8 barrels have flats on either side of the barrel by the Knox form, this was for the new breeching tools Enfield were going to use! There were other makers of 7.62mm barrels, A.J.Parker, Sterling, Delacour(Belgium) and possibly Parker Hale! All with bayonet lugs unlike the Canadian barrels without lugs