MTM's 45 Caliber Ammo Can is molded out of rugged polypropylene plastic, and this comfortably handled ammo can will hold up to some pretty harsh treatment. It is lighter in weight than a military surplus can. The 45 Caliber Ammo Can is designed to hold a 500 round case of 45 ACP or 4 boxes of 3 12 gauge shot shells and shooting glasses. Utilizing MTM's tongue and groove O-Ring seal system for a water-resistant seal. A heavy-duty dual latching system makes for a better seal and less likely to open accidentally. Padlock tabs along with molded-in stacking ridges, make these solid containers the perfect solution to so many storage needs.