5.56×45mm NATO

5.56×45 NATO(official NATO nomenclature 5.56 NATO") nyangagi rimless bottleneck center intermediate nyan cartridge family nan ah tswa 1970 zhi Belgium gwata Hersal'o nan wun yi'o. Wun de SS109,L110,ah be SS111 cartridge. Ela 28 October 1980,tako STANAG 4172,wun de lila lo second standard gwata service rifle cartridge ya NATO forces ah be non NATO counties.