The Rusan Modular adapter clamp for Clip On Thermal Attachments is the best adapter made! Now with a quick detach system that allows you to switch between scopes rapidly by leaving the Modular Adapter attached to the scope. The adapter features a silent clip-on whereas the adapter has internal rubber-based tape that enables the hunter to mount the clip on silently. A Modular Attachment is also required which will attach to your thermal clip on device. Available for InfiRay, Pulsar Krypton, Pulsar Forward NV, Guide, Burris, Leica Calonox.