Anyone have experience with filing the corners of the rear sights on a pistol? I have a Springfield XDm 9mm 3.8 compact that I use as a carry pistol about 50% of the time. I have a great IWB holster from Milt Sparks but the rear sight is so square (doesn't have rounded corners like my Sig P238) and it makes the rear sight really stick out/print through my shirt. I'd like to file down the corners of the sight to smooth it out but not sure the best way to go about it. What kind of file should I use? I don't want to use a Dremel and get carried away on accident. I'd like it to look symmetrical when Im done too...maybe I better take it to a gunsmith so if it turns out jacked up its not my fault... What do you guys think? Comments? Suggestions?