Please meet the Alpha I.C.E (Integrated Cooling Element) If you can come up with something better I'll change the name
I made this single prototype and sent it out with my last plating run. I think it came out pretty great so I thought I'd see if anyone wanted it. My maker's mark is stamped on the tailcap instead of the head like my standard Alphas. This body is ideally suited to the XML because of the huge amount of heat it produces. I have some U2s in stock. The last U2 light I made with a TIR optic was about 630 lumens. I wouldn't expect more than 600 though.
The ICE is also nickel plated like my regular customs.
This light will ship with blue Fluorosilicone o-rings.
This is truly your best yet. You mentioned the extra grooves increase cost. I was thinking the radial grooves on the head may be abrasive to pants. What might the price look like if this was a regular production model and/or the radial grooves on the head were removed?