Used Grade 1 M19A1 30 Cal (Caliber) Ammo Can StenciledColor: Olive Drab Green (Powder Coating Polish Paint). The 30 Cal is also known as 7.62MM and M19A1. Our 30 Cal Military Grade Ammo Cans feature a hinged lid with a tension clamp-down, a rubber seal on the lid and a carrying handle. Even though they may or may not say 30 Cal on the side of the can, they are indeed, empty 30 Cal ammo cans.* Outside Dimensions: (Length) 10inches x (Width) 3.5inches x (Height) 7 inches.* Inside Dimensions: (Length) 10inches x (Width) 3inches x (Height) 6.75 inches* Ammunition Box Material: Carbon Steel SUS304, Aluminum 5052 Surface