ˈaɪɚn wʌz ɹᵻmˈuːvd fɹʌmðɪ aʊtsˈaɪd ʌvðɪ ɚɹˈɪdʒɪnəl ɡˈʌn bˈæɹəl nˌɪɹ tə ðə mˈʌzəl sˌoʊ ðˌæɾə kˈæst ˈaɪɚn kˈɑːlɚ kʊd biː skɹˈuːd ˌoʊvɚɹ ɪt ænd pɹəvˈaɪd ɐ ʃˈoʊldɚɹ æt ðə mˈʌzəl tə hˈoʊld ðɪ ɐ tˈuːb ɪn plˈeɪs.
Iron was removed from the outside of the original gun barrel near to the muzzle so that a cast iron collar could be screwed over it and provide a shoulder at the muzzle to hold the A tube in place.