If you need NATO tactical ammo for practice or for the field, then you should invest in Federal American Eagle NATO Tactical Rifle Ammunition. For decades, this company has produced tactical-grade ammo of the highest quality. The manufacturer, Federal American Ammunition, operating out of Minneapolis, focuses on the manufacture of a full product line of rim fire, centerfire, as well as shot shell ammunitions and their components. However, the company remains best known for its best-selling line of rifle ammunition, which is also available for very demanding MSR shooters (modern sporting rifles). Note: This is military grade ammunition. It will show discoloration which is caused by a process known as annealing. This is completely normal. The cases may also have minor dings from being bulked packed.