Anyone ever had Springfield Armory custom shop do any work on their handgun? Turn around time? Price? Quality of work performed?. I have an unfired XDM .45, I would like to have some night sights put on and have them armor-cote the slide. I do not have gunsmith close to have this work performed, so just thinking I will just send back to Springfield to have it done. Any advice or experiences with other places to have work performed would also be welcomed. Thanks.