U.S. Military M2A1 50 Cal Ammo Cans (12 Pack) 12 pack of 50 Caliber Ammo Cans-Grade 2 Commonly used to hold 840 rounds of 5.56, and various other goods so the stenciling may be of other types of ammo. Ammunition box Material: Carbon steel SUS304, Aluminum 5052 Surface Finish:Powder coating Polish ,Paint,Anodize Part Name :Calibre 50 ammo canMaterial: Carbon steel SUS304, Aluminum 5052Surface Finish:Powder coating Polish ,Paint,Anodize Electric enclosure , Cabinet ,Came. Product Dimensions: (Length)11 inches x (Width)5.5 inches x (Height)7 inches. These ammo cans are from different parts of the military. Even though they do or do not say 50 Cal on the side of the can, they are indeed, empty 50 Cal ammo cans. Please note when ordering if desiring the can to say 50 Cal.