I don't know if I am in the right place. I have a Thompson Center Omega, that was given to me it was missing a lot I was able to find a stock and a breech plug pretty easy, how ever. I can not find a trigger, Does anyone know where I can purchase one. I would very much appreciate any help

Have you called T/C? They don't make the Omega any longer, but parts maybe available. Watch some of the muzzleloader sites sometimes a "parts" gun will show up or check ebay. Good luck!