If you don't want to send it in to STI, order another front sight from Dawson. I have fitted a few and it isn't terribly hard, just a little time consuming. As other have mentioned, Dave Dawson has an excellent YouTube video on fitting sights. His video goes through the process step by step. If you do decide to send it in to STI, contact them first, they will send you a return shipping label free of charge to you. It will take them 4-8 weeks to get your gun fixed, but they will take care of you. I have sent one in myself, it is pretty easy to do, they will send you instructions walking you through the process, good luck on whatever you decide to do.