This QD Mount Base features an anodized black aluminum construction with a 1.73 mount height. Compatible firearm platform includes standard AR15, M16, and M4 uppers. Designed specifically for compatibility with Aimpoint CompM4 and CompM4-S optics, it provides secure mounting with quick-detach functionality. Safety Note Always ensure the firearm is unloaded before installing or adjusting any optics or bases. Verify proper torque specifications during installation. Improper mounting may affect accuracy and safety.