MTM 223 Ammo Box ComboWhat better way to store & protect bulk ammo than with MTM Ammo boxes sealed tight inside an MTM Ammo Can. MTM ammo cans come with a water resistant O Ring seal. MTM Ammo Cans are water resistant not water proof MTM ACC223 Ammo Can Combo Holds 400 Rounds The ACC223 includes: 1 each AC50, 4 each RS 100's in tactical black (Holds 400 Rounds). RS 100's Hold: 17 Fireball, 17 221 222 223 Rem., 204 Ruger, 218 Bee, 22 Hornet, 222 Rem. Mag., 223 Rem. HP, 25