Here is my Prometheus Alpha ready made. It has a TIR optic with a 6500K MCE cool white LED and approximately 900 L out the front @ 30 seconds. The yellow Cerakote was done by Pittsburgh Cerakote, Pittsburgh, Pa. They do outstanding work and are reasonably priced. www.pittsburghcerakote.com
A few years back PK had one done in yellow, one in gray and two in copper. There was a black and white photo of his cluttered desk at PKDL. The #289 serial number could be seen on his desk but being b&w one could not tell it was copper colored.
The clip is from a PR-1 with a very slight modification to allow it to slide over the o'rings at the tail end. The lanyard ring is an Elzetta wire ring. The lanyard is from a LED Lenser.