I bought one, I used it one time and I'll never regret it. My SKS shoots dead on at 100 yards with open sights. I love SKS rifles but they have always been a bit of a guessing game because the sights were such a pain to deal with. This little tool does what its supposed to, it adjusts your front sight quickly and easily with very little hassle. If you have an SKS or like me you have a few, this is a necessary part of your SKS tool kit. Get one!