I have FOUR of these scopes. I have no idea what the other reviews are talking about with regards to the scope being hard to turn on. The 4 way power knob on mine (0-4) all turn easily.
Note that these scopes are likely not made for real steel. I'm unsure if they would withstand the recoil of a gun without losing thier zero.
I use mine on airsoft guns and they are great. Thier value is awesome. They can be zeroed without the need for a screwdriver which is nice for quick adjustment mid game.
They are made of plastic. This is a double sided sword. This makes them very light weight but also less impact resistant than a metal counterpart.
If it means anything, I came to buy two more. Mine aren't broken, I just need more. When I saw the bad reviews. I just had to make sure the record was set straight on these and the applications where they really shine.
Pros: Low price, Light weight, Can zero in without tools
Cons: Plastic body
This review was written in the old system and had content requirements that are different than reviews written today.