�Remington really went out of their way to help put this together. They created the stock with the cheekpiece on it; they never had this heavy a barrel in this stock. We had the scopes sent in from Redfield. Remington mounted them, tested them, and they were put in a specific case and shipped to Vietnam or to Quantico.� This was the rifle used by Carlos Hathcock in his second tour of duty.
Since Hathcock was in the Corps for years after he left Vietnam & training young snipers I feel sure he fired an M40 at some point. I'd like to own one that was fired by him.