WaterBrick Stackable Ammo Storage Container- AmmoBrick 1.6 Gallon Portable Ammunition and Bullet Storage Solution - Maximize Your Readiness&hellip; Stackable: unique design securely stacks to maximize limited storage space. Durable: Made of rugged, high density polyethylene with an air tight and moisture resistant seal. Convenient: Stack and store anywhere you need it or grab and go. Holds loose and boxed Ammo for all of your Ammo Storage needs. Made in the USA for everyday use to hold ammo and other life essentials.