This is 7.62x39 Golden Bear 123gr. Full Metal Jacket Ammo. 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 brass plated steel case, which gives you all the characteristics of brass, at a fraction of the cost. Since this ammo is brass plated, it functions much smoother than any other steel cased ammo. This ammo is 100% non-corrosive and the primer is sealed for moisture protection. It comes packed in 20rd boxes, 500rds. per case.