ʌnlˈaɪk ðə nˈaɪntiːnhˈʌndɹɪd sˈɪksti tˈuː sˈɛmaɪˈɔːɾoʊ dʒˈiː θɹˈiː z, ðiːz nˈaɪntiːnhˈʌndɹɪd sˈɪksti sˈɪks mˈɑːdəlz hˈæd ðə "pˈʊʃpˈɪn" hˈoʊl ɪnðə kɚɹˈɛkt plˈeɪs ænd ðˈʌs kʊd biː kwˈɪkli kənvˈɜːɾᵻd tʊ ɐn ˌɔːɾəmˈæɾɪk baɪ ɹᵻplˈeɪsɪŋ ðə ɡɹˈɪp ɐsˈɛmbli wɪð ɐ fˈʊlˈɔːɾoʊ "sˈɛf" tɹˈɪɡɚ ɡɹˈuːp.
Unlike the 1962 Semi-Auto G3s, these 1966 models had the "push-pin" hole in the correct place and thus could be quickly converted to an automatic by replacing the grip assembly with a full-auto "SEF" trigger group.