An offset scope mount is a type of mounting system that allows for the attachment of a scope or other optical sight at an offset from the centerline of the firearm. This can be beneficial in a number of situations, such as when using a magnified optic with a red dot sight for backup, or when clearance is needed for charging handles, suppressor mounts, etc. There are many different offsets available, but the most common is the 2 inch offset.
When choosing an offset scope mount, it is important to consider the intended use and make sure that the chosen model will work with both the optic and the firearm in question. There are many different factors to consider, such as height above bore (HAB), eye relief, field of view (FOV), tube diameter, etc. With so many choices on the market, it can be overwhelming trying to decide which one is right for you. However, by taking all of these factors into consideration and doing your research ahead of time, you can be sure to find the perfect mount for your needs.