bird hunter1

Does anyone know if the front bead on the new M1 Super 90 Field is threaded or pressed on? I tried to remove it to put on a new HI-Viz light pipe but the factory bead site did not budge when I tried to loosen it with a pair of needle nose. I do not want to damage the orignial site bead (small light pipe). The Hi-Viz packaging indicated that Benelli gun sites are removable but did not list any models. Thanks in advance for any information on this matter.