MTM ammo cans are a great way to store bulk or boxed ammo. Its all plastic design is lighter in weight than the 30 caliber US Military Surplus Ammo Cans. Transferring ammo to and from the range, just became a little easier! I deal for bulk 45 ammo. 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 30 caliber can is designed to fit the same amount of bulk ammo as the originals. 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. Weight: 1.38 Pounds. The 30 cal military metal can weighes 3.76 pounds or 270% heavier empty. Outside Dim: 7.4”(L) x 13.5”(W) x 5.1”(H) Inside Dim: 6.0”(L) x 11.2”(W) x 3.7”(H) under the handle slot