Russian surplus ammo is sometimes referred to as Spam or “Spam cans” because of how it’s packaged. Russian military ammo is bulk packaged in wooden crates. Within each crate are the Spam Cans, sealed metal containers that resemble a can of Spam (canned pork) in which the bullets are stored to protect them from the elements. Each Spam Can contains an opener that allows the container to easily be pried open.