I've had a couple of thee, both the integrated light model and the one like this to hold a Surefire.

While I find the concept to initially be sound, I found it to be lacking both in conceptual form and in application once I started using it.

Conceptually, I have since tpdetermined that I don't want my light and my sight to be a single unit. Reasons are multiple, but primarily I don't want to have to lose my sight/zero if the light needs off-gun maintenance, and I want my light to be easily removable to use on other guns or even handheld if requeired.

In application, I found the execution to be lacking in that it was simply unbearable to zero. I'm sure I was doing it wrong, and some have made the argument that you only zero once. Maybe, but I found the process so painful that I didn't even get a hard zero the one time, so I find that argument flawed.

For me, the A answer is still a locking, foldable front sight and an X300.