If you do a lot of training, you probably keep a fair amount of ammo on hand. Surplus ammo cans are a great way to store your ammo, but you need to label them or they all look alike. Weapon Stickers offers a simple and very readable solution for organizing your cans with their Ammo Can Labels. They are available in packs of 2 and 10.
Check out the Ammo Can Labels from Weapon Stickers.