Material: Scope mounts are commonly made from materials like aluminum or steel. The material choice can impact the mounts' durability, weight, and resistance to recoil. Mounting System: Scope mounts use various systems to attach to the firearm, including Picatinny, Weaver, or other proprietary systems. Ensure that the mounts are compatible with your firearm's rail or mounting platform. Design and Height: Scope mounts come in different designs, including one-piece and two-piece mounts. They also vary in height (low, medium, high) to accommodate different scopes and align the sight picture properly. Diameter: The diameter of the scope tube determines the size of the rings needed. Common diameters include 1 inch, 30mm, and 34mm. Number of Mounting Points: Scope mounts typically have two rings that secure the scope. Some mounts have additional support points, especially for heavy or long scopes. Quick Detach (QD) Feature: Some scope mounts come with a quick-detach feature, allowing you to easily attach and detach the scope without the need for tools. Finish: The finish of the scope mounts can affect their appearance and corrosion resistance. Common finishes include matte black, gloss black, or various camo patterns.