It is believed that there was a quid pro quo agreement between Churchill and U.S. President Harry Truman in 1952 that the British accept the .30 Light Rifle cartridge as NATO standard in return for the U.S. acceptance of the FN FAL as NATO standard.
Diperkirakan Churchill dan Presiden Amerika Serikat Harry Truman pada tahun 1952 membuat perjanjian agar Britania Raya menerima peluru .30 Light Rifle sebagai peluru standar NATO, dan Amerika Serikat menerima FN FAL sebagai senapan standar NATO.