Aluminum canteens similar to this one rode on the belts of American GIs for decades, seeing use across Euope and Asia. They were also used by recreational hikers and campers for the better part of the 20th century.
You can own your own aluminum canteen complete with an lined cover and belt hooks desinged to integrate with your pistol belt. There is even room inside the cover to add one of our stainless steel canteen cups.
As an added convenience, the twist off cap is attached to the canteen with a small chain to prevent the cap from falling off and getting lost in the field.