mˈoːɹ ɐdvˈænst ɡɹənˈeɪd ɹˈaʊndz wɜː dɪvˈɛləpt ɪnðə nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi z ænd nˈaɪntiːnhˈʌndɹɪd nˈaɪnti z tə mˈiːt ðə ɹᵻkwˈaɪɚmənts ʌv mˈɑːdɚn bˈæɾəlfˌiːldz.
More advanced grenade rounds were developed in the 1980s and 1990s to meet the requirements of modern battlefields.