These ammo cans are factory new, manufactured in 2023 by a Mil Spec Manufacturer in England. These are the same Mil Spec cans this manufacturer supplies to the US Military. The lid of the can has a rubber gasket that helps to keep moisture out, it’s recommended to put a silica gel packet in the can with your ammunition to extend the shelf life and reduce the chance of corrosion. They are the perfect storage container for many different ammunition types. Ammunition can be stored loose or inside boxes within the can.