Installs in less than 20 minutes. Was right on the sight line, very accurate. Did not have to adjust once mounted. I really recommend this grip. The dot stopped a robbery from happening while I was riding my Harley in east Cleveland at a gas station. I love this sight. I did think the price was steep, but the value is outstanding. I'm buying a 380 for my wife so all my stuff works well together and it will have Crimson red laser on it very quickly. I have look at the green laser and it says shorter battery life. So it is red for me and I'm very pleased.