I have a crimson trace LG-746 Rail Light on my XDM-40 4.5, with a Lazermax guide rod laser, and matching IWB & OWB Crossbreed holsters that give me light, laser, and 17 RDS of .40 S&W at the ready. Its a very low profile arrangement for a full frame. For EDC I use an XDM-40 Compact, which is lighter, profiles less, uses the same mags, and can interchange the rail light, if not the laser. Both are Bi-Tone, and a handsome pair ;-)