Federal American Eagle Ammunition has been loaded and passed true NATO specifications. This is the same ammunition that is currently being used by the US Military and met their strict quality assurance standards and specifications. This Federal American Eagle 5.56mm M193 NATO ammunition is the perfect example of superiority that goes into making Federal ammo with its re-loadable brass casing and finely designed boxer primers. Like any Federal products, the XM193 product is brand new, original, first quality product manufactured at Lake City Army Ammunition Plant for Federal Cartridge and is made to Federal specifications typical for commercial ammunition. Shooters can have ease of mind knowing that all XM193 products are the same product, made to the same specifications, regardless of the sku or part number. (ie. XM193C is the same as XM193F, XM193CBP and etc…) the only difference is the package configuration. This is an added bonus for hunters and shooters that have calibrated firearms to match specific ammunition.