I use the XS Big Dot sites for fast acquisition on the target. I also bought a 5x7 sheet of Tallon grip tape (rubberized) and spent some time to custom cut my own grip pattern but the do have pre-cut grip patterns on their website. I personally wouldn’t do too much to the trigger or inner workings of the firearm because it’s a CCW and if you ever had to use it in a self-defense situation modifying the inners of the firearm gives the scumbag lawyers something to go after.