The Leica Rusan Adapter was designed to seamlessly connect a Calonox Sight to a compatible Rusan scope adapter, providing a secure and reliable mounting solution for thermal clip-on applications. Featuring a robust throw-lever tensioning sleeve, it threads directly onto the eyepiece end of the Calonox and slides over the objective lens housing of your daytime optic. This simple yet highly effective design allows hunters and shooters to quickly attach a thermal clip-on device to their day scope without requiring permanent modifications or specialized tools.

Installation is fast and straightforward—simply slide the adapter over the front objective lens of your scope and move the lever to the closed position for a secure lockup. The adapter covers approximately 1.4 inches of the objective lens, creating a generous clamping surface area that helps ensure exceptional stability and retention, even in demanding field conditions. To further enhance performance, the interior of the adapter is lined with a special protective film that increases gripping power while helping prevent scratches, marring, or other damage to your scope’s finish.

Built to Leica’s high standards of quality and durability, the Rusan Adapter delivers a dependable connection between your thermal device and optic, helping maintain consistent alignment and repeatable performance. Whether you’re hunting at night, managing predators, or operating in low-light environments, this adapter offers a quick, secure, and user-friendly solution for mounting your Calonox thermal sight to your favorite daytime scope.