You definately need the spouts to pour fuel out of them without getting half of it on the ground. Maine Military Supply has them too. https://www.mainemilitary.com/produc...idproduct=2239
The European water and gas cans look exactly the same except what is stamped on the outside. I have 8 Swiss water cans that I bought new and are the same Euro NATO pattern. I don't like used water cans as I know sometimes the soldiers put stuff in them besides water. I use used surplus Euro cans painted red for gas and my dad uses ones painted yellow for diesel. They are durable as hell but heavy compared to a commercial can. The handles are made to allow you to carry two empty cans in each hand.