Great sight - UTG Pro ACCU-SYNC Top Mounted Deployable Rear Sight

Nice aluminum sight. I do agree with the others that the button is a little stiff but it's been better since adding some oil and some use. The spring is very stiff and flips up the sight quickly when pressed. Comes with the wrench to attach it to the rail. I would like to see the rail attachment piece that has the screw be a little longer, like the other side is. Used some blue loctite on it and it has been fine so far though. Side to side adjustment clicks every 45 degrees, is smooth and easy to turn.