Yeah, i had one i got from a guy in australia who was doing a run of them about 6-8 years ago...he got every detail spot on, but the acrylic was a little hazy and the grid was a tad crude, but he had all the exact components, knobs, circuit board, etc.
then i picked up an early HMS...couldn't justify keeping them both. And to be honest, i forgot why i sold off the early HMS to get the more current version...maybe i had my eye on another prop at the time and sold them off to afford whatever else i wanted at the time.
anyways, nice build.
as to a CAGE LASER kit, I have no idea. Nicks Dad was selling them, maybe, but they were not cheap...but I will say they were spot on from the pics i've seen and the craftsmanship of materials looked great.
HMS/Roddenberry sells them as kits, I believe...but also, not cheap.
efx was supposed to sell Cage laser AND communicator, but that was over a year ago, i think, and I've heard nothing new about them.
good luck on comm builds...i used to own those walkie talkies. i'll keep an eye out for your new post on that conversion.
t