Mac at one time was making some nice ribbed C/C 1x18650 bodies with a combat ring already built into it. You could get it coated in Modamag's new exotic coating service.
good luck in trying to find one of these. i scrambled to find them a year or so ago...just after Leef retired...no luck...i finally gave up. i'm sure someone has one in his drawer that no longer gets any use...