This is .223 Silver Bear 55gr. FMJ Ammo in a Sealed Spam Can. This ammo is manufactured by JSC Barnaul Machine-Tool Plant in Russia. Barnaul is considered to be the premier ammunition factory in Russia, and it supplies most of the ammo to the Russian Military. This ammo has a unique nickel plated steel case, which gives you all the characteristics of nickel plated brass, at a fraction of the cost. Since this ammo is nickel plated, it functions much smoother than any other steel cased ammo. This ammo is 100% non-corrosive. It comes packed in 20rd boxes, 700rds. per sealed spam can.