Making use of four, .30-cal., O-ring-sealed ammunition cans, the U.S.-made, 4-Can Ammo Crate from MTM Molded Products Co., provides roughly 738 cubic inches of lockable storage. Each can nests within a rugged polymer crate to form a compact storage and transportation solution for ammunition or accoutrements. Loaded crates are stackable, with carry handles on either end, along with tie-down points. Price: $40. Contact: MTM Molded Products Co.; (937) 890-7461; mtmcase-gard.com.