Description

The Rusan ARM52-58 is a benchmark in the hunting industry for mounting “front-attachment” thermal units. The 58mm sizing is a very common requirement for many 50mm lens diameter riflescopes (where 50mm refers to the glass, but 58mm is the outer chassis).

Built to survive the recoil of heavy magnum calibers, the adapter utilizes a specialized blue internal film that grips the scope body tightly without the need for plastic spacers. This design ensures that the thermal unit remains perfectly aligned with your dayscope’s optical axis. The signature blue lever is adjustable, allowing the user to set the perfect clamping tension for a silent, secure fit every time.