I've used my Streamlight Stinger for about a year now. I crawl under houses all day and, after a while, the light seems to dim a little. I got this new lens assembly and the light came out as good as when I first purchased my light. Over time, the lens gets scratched and the reflector gets a little dim. The new assembly is very inexpensive, but it does exactly what you'd expect it to do.
This review was written in the old system and had content requirements that are different than reviews written today.