I used one for a while, it worked pretty much as advertised, but I tried a No Peep by Timberline and liked it better. I gave the Hindsite to a buddy and he likes it.

Just keep in mind you have to use it with a fixed pin sight, not one that slides.

And for me an actual peep sight was still more accurate than the Hindsite or the no peep, but both were plenty good enough to hunt with. After using the no peep I can actually shoot well enough without either at hunting distances.

And I had the Hindsite Extreme, not the regular hindsite.

Paul