Hornady Frontier Military Grade 5.56x45mm NATO 55 Grain Full Metal Jacket - 20 Round BoxFederal Lake City has partnered with Hornady to create a military grade cartridge with a Hornady bullet which offers unbeatable value for the quality accuracy and reliability. The Lake City plant can manufacture ammunition at a volume and at a consistent quality that almost no other manufacturer can rival. That is why the US Military uses the Lake City plant and that is why it is so special that Hornandy has been able to partner with them and get their finely tuned bullets inside the well-refined Lake City plant casings. Military-grade primers casings quality control mechanisms and Hornady's proven ballistic performance team up to form the Frontier name.