5.56×45mm NATO

The 5.56×45mm NATO is a standard rifle cartridge used by military forces worldwide. It consists of a 5.56-millimeter diameter bullet housed in a 45-millimeter-long cartridge case. Designed for high velocity and flat trajectory, it offers accuracy and manageable recoil. Originally developed for military rifles like the M16, it is effective at medium ranges and capable of delivering rapid-fire suppressive fire. Its widespread adoption means many rifles and firearms are compatible with this cartridge, making it a common choice for both military and some civilian shooting applications.