Molded out of rugged polypropylene plastic these comfortably handled ammo cans will hold up to some pretty harsh treatment. Utilizing MTM's tongue and groove O-Ring seal system for a superior water-resistant seal the 50 caliber can is designed to fit the same amount of bulk ammo storage as the original. A heavy-duty dual latching system makes for a better seal and less likely to open accidentally. Double padlock tabs along with molded-in stacking ridges make these solid containers the perfect solution to so many storage needs.