We like these new MTM plastic ammo carriers better than military surplus metal ammo cans, which have sharp edges, finger-pinching clasps, and rust far too easily. MTM’s ammo carriers are much lighter than milsurp ammo cans, and they have an enhanced O-Ring seal system for a superior water-resistant seal. All plastic, the MTM ammo carriers can never rust. They have easy-to-shut dual latches, double locking tabs for padlocks, and convenient built-in stacking ridges molded into the lids. Overall, the MTM ammo carrier is a superior, more user-friendly design compared to conventional metal ammo cans. And the combo set, with fitted 100-round boxes, gives double protection to your precious ammunition.