Most 1100's beads are screwed in, most especially the plain barrel ones but some of the vented barrels use a bead that's staked in place. The bead will turn and turn and never unscrew. It also is very difficult to pull. They resembled the pressed in beads but have a circular stake that hold them in. These I usually drill out and tap for the new one. The center beads are also tapped and a new threaded in. The threads used and there are several are gun taps and the material(aluminum or barrel steel) is relatively soft so tapping is not a big problem. Use the smallest thread you can so that in the future it can be redone if needed. Epoxies are sort of a last resort but work after a fashion. If red locktite is used these very tiny screws will almost certainly break off, sometimes even if heat is used. Also be careful with applying heat to a ribbed barrel. Some ribs are applied using a special adhesive and heat can damage it's bond.
