First Breach 5.56X45 NATO 55 Grain FMJ ammunition consist of new, world-class and match-grade components made in the USA. All First Breach ammunition is qualified through a series of automated and manual quality assurance processes. First Breach pulls units from its lines every 15 minutes to perform further tests in our QA (Quality Assurance) laboratory. First Breach's process ensures that our products allow for optimal performance, has consistent tolerances and reliability, and mitigates variances.