The 1.93 scope mount is a type of optical sight that is often used on rifles. It is so named because its length is 1.93 inches, which is the same as the width of a standard rifle scope. This makes it easy to install and remove the scope mount without having to remove the entire rifle from the case or bag.
The main advantage of using a 1.93 scope mount is that it provides a more stable platform for the scope, which can improve accuracy. Additionally, it can be easier to re-zero a scope that is mounted in this way, since there is less movement between the reticle and target. Finally, many shooters find that they prefer the look of a longer scope on their rifle, and the 1.93 inch mount helps to achieve this aesthetic goal.