Posted after two years use with abt 700 rds - Texas Weapon Systems Gen-3 Basic Rear Peep Sight for Gen-3 Top Cover

I have read recent reviews stating that it will not hold. I did use locktite on my threads, but I have had no issues with it. I do not always use it as I do have an optic mounted, but I checked it while writing (2023) and the is no shifting. I bought and mounted mine in 2020. Maybe there are some tolerance issues at the factory, but mine is good as gold. Is it possible that the issue may be placement? Mine is fully rearward. Just a thought; maybe you can find a tighter fitting location on your rail. My experience says this is a great purchase, but OP has a great return policy just in case.