I'm looking for a rail light for my g23 gen4. I have a sure fire light that isn't mountable and it's great. I see the x300 Ultra and x300v. The v has IR. Is that for use with NVG? I don't own NVG, so I'm guessing the IR is pointless for me.What other lights should I consider. The primary purpose is to live on the g23 in the safe and light up when called upon.