Vintage Original Ithaca Model 37 Orange Replacement Bead for Front Sight

I have one pictured with a frame to show what it should look like (the metal frame is not included).

Note I installed a couple of these beads and the best way I found to do it is to tap out the old one with a punch, then use a small piece of soft wood to tap the new one in. It should fit quite snuggly. All of the ones I’ve installed for perfectly.