I do not like the QC at S&W. It seems the past few years QC has not been good for S&W. They even had problems with an I-Bolt rifle they had sent a writer for review. I have read several unfavorable reviews of the I-Bolt. IMO, TC firearms has gone down hill since S&W bought them out.
If you are going to repaint the front sight, have you thought about using a glow in the dark paint? I prefer a nightsight for the front sight only. If you use this paint on the rear sight, you may want to put on a much smaller area in the center of the rear sight. I prefer the front sight to be brighter and more dominant than the rear sight - especially for nighsights.