FOOD4GUNS ammo boxes by RC-tech are designed to hold 150rd of 9mm ammo. As experienced shooters we found that the capacity of 150rd is more practical for shooters and is perfect for all matches. 1 box holds enough ammo for a small match, if you need more ammo simply take 2-3 boxes. Made from high quality injection molded plastic, these boxes feature a sturdy hinge design and come in 4 awesome colors.