What is nato ammo?

NATO ammo refers to ammunition that conforms to the standards set by the North Atlantic Treaty Organization (NATO). These standards define the physical and chemical properties of the ammunition, including caliber, length, weight, and velocity. NATO ammunition is designed to be interchangeable between weapons of member nations, ensuring compatibility and interoperability during joint military operations. The most commonly used NATO ammunition calibers are 5.56x45mm and 7.62x51mm for rifles and 9x19mm for pistols. The ammunition may be produced by member nations or purchased from outside sources, but it must meet the NATO standards to be considered NATO ammunition.