MTM Products AC30C11: MTM\'s 30 Caliber Ammo Can, in short or tall model, is molded out of rugged polypropylene plastic, and this comfortably-handled ammo can will hold up to some pretty harsh treatment. Lighter weight than a miltary suprlus can, both the tall and short design offer the same capacity as a traditional 30 caliber military ammo can and will not rust. A heavy-duty dual latching system makes for a better seal that is less likely to open accidentally while the tongue and groove O-Ring seal system make it water-resistant. Heavy duty padlock tabs along with molded-in stacking ridges make these forest green containers the perfect solution to so many storage needs.