That's what I was thinking. The light is a little bigger than a P7 and there was a suggestion about putting the optic onto a P7. Now that I've re-read the post, it is stuck on the front of the lens, not replacing it. https://www.candlepowerforums.com/posts/2896094&postcount=7
This thread was started with nothing more than a vague and unhelpful title, 2 advertising links and a question as to whether the unnamed and undescribed items fit together. That is not an adequate basis for a thread. It is closed.