I use Elzetta lights and mounts for all of my customers' guns. IMHO, they're the best lights in the business. I stock the A322, which is a 315 Lumen flood light with a crenelated bezel. I also stock the A324, which is the same, but with the addition of a strobe feature. These lights are literally tougher than nails. There's a video on Elzetta's website where they turn on a light, then literally nail two 2x4s together with it.
Hope this helps,
Brad