MTM Case-GardTM introduces an all new way of storing ammo boxes. MTM Ammo Racks will change and improve the way you organize ammunition.Features: Racks may be stored standing stacked flat or hung on a wall Ideal for maximizing gun safe storage Shelves are adjustable for different combinations Four holes molded into the back for secure mount to wall AR9M comes with eight P50-9M ammo boxes accommodating 400 rounds of 9mm or .380 ACP