There was a triple XP-G light posted a few months ago. I wonder if this is an XP-G and if it's the same light. I'm thinking it was from Costco.
EDIT - here's the old thread, but the Costco link is no good.
EDIT #2 - This might be the same light (new Costco link replacing dead link). It's definitely different from the O.P. because this is a 3C cell and not CR123's.
-Garry