Stockpiling has never been easier. That is because when you order Federal XM193BK 5.56 ammunition, you get 1000 rounds of high-quality ammunition. Manufactured to the highest specifications, each cartridge contains a 55gr full metal jacket bullet that is perfect for a range of applications. These non-corrosive, brass-cased cartridges are boxer-primed, reloadable and ready for use with any rifle chambered in 5.56x45mm NATO.