For just about the same money this thing doesn't even touch a sig sauer romeo series or, a holosun product due to the horrible windage/elevation adjustments. I purchased 2 romeo fives off amazon for a $119, it is only a red. They are non existent!
I like the fact that it's a bit more put together than the green dot sight that you get with other gel blasters or foam blasters. It's also a bit easier to use than a foam blaster.
This is not even good for a bb gun. There are fake * that don't adjust anything. A green cross appears on screen, but can only be seen indoors. Another downside is that the mounting process is easy.