Why not run the latest offering from streamlight? - Streamlight TLR-1 HL-X Multi-Fuel High Lumen Rail-Mounted Tactical Light

This is an upgrade over the TLR-1-HL and I have them both. I like the new battery door location, although I've never had to replace the batteries in my HL. I really like the location and tactile feel of the buttons over the switch. The size is slightly different, so it will require a new holster. It's not worth swapping it out, but I would definitely recommend buying a new pistol and getting this WML.