Machinist please...

I want to know if I can get a new bezel or bezel extension ring made up. I’m experimenting with a different reflector in my tk61. The pics should give you an idea of what I’m after. I would like it to thread onto the light if possible, that’s part of the reason I was thinking a whole new bezel might be better, only one thread to cut.

Let me know what you think and more particularly if you can do this job for me. Thanks