The MTM 4-Can Ammo Crate is a rugged tactical carrying crate for multi-caliber storage and transport. The MTM 4-Can Ammo Crate comes with four, o-ring sealed 30 caliber ammo cans for excellent storage options. The ammo cans are stack-able and strap-able with four tie down spots for ATV attachment. The 4-Can Ammo Crate is a perfect way to keep your ammo cans secure while creating a more effective storage solution.