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. They feature a hinged lid with a tension clamp-down, a rubber seal on the lid and a carrying handle. These cans are straight off the production line from the manufacture. They have never been used, which is hard to find. You’ll find these cans are offered at some of the most competitive prices on the internet. They are complete with air/water-tight gaskets and are perfect for long-term storage. Made of Carbon Steel SUS304, Aluminium 5052 Surface.