I purchased this mount for an Accushot/Leapers UTG 4-16X50 AO scope. This mount is like a tank, a very light one. If you want to clear your rear tangent sights you need to study the dimensions carefully. I have had this mount on and off changing from rifle to rifle and I only have to adjust a few clicks between rifles. It does not effect zero. I wanted the long mounting clamp thinking it would help keep zero and it does. If you have one rifle I am sure you can remove and replace the scope as much as you want, and never have to re-zero again. Follow the instructions as they are written. You will be happy with this mount.