Things I liked:It does work if you treat it with care. Worth the price. Things I would have changed:Make the windage and elevation controls smoother. Right now, the windage especially, jumps and stops as you turn the knob. Requires lots of trial and error to get it on target. Also, PLEASE put locking screws on the controls. They move with a light touch even by accident. What others should know:This sight is large for a pistol red-dot sight, is cheaply made but fair for the money. Not for serious use if you expect it to be pointing where you last left it. For plinking only.