The Rusan Modular Adapter (MAR) was developed as a solution for fast and precise mounting of thermal and night-vision clip-on devices across different rifle configurations. We tested it on the shooting range to evaluate system practicality, mounting stability and ease of use.
Bayonet System and Construction
The core element of the system is the bayonet interface, which locks using a rotating collar on the front section of the adapter.
Four precisely machined lugs engage with the corresponding recesses on the clip-on device, and the collar secures the connection without any movement.
The adapter section that clamps onto the riflescope is available in two versions:
- with three screws for a permanent, rigid
- installationwith a quick-adjust lever for faster and more convenient handling
Both options provide stable and repeatable mounting of the clip-on device.
Installation Process
Installation is straightforward and intuitive. The two parts of the adapter are first connected and mounted onto the clip-on device.
The part that remains on the riflescope is positioned using an Allen screw or a lever, after slightly loosening the safety stop screw.
Once the assembled adapter and clip-on are slid onto the riflescope, the screw is tightened just enough to allow rotation for vertical alignment.
When the device image is perfectly aligned with the scope’s reticle, the adapter is tightened to the recommended torque.
This results in a stable, clean and repeatable mounting solution.
Accessories
A wide range of accessories is available to cover most real-world needs:
- various protective covers for the optic and clip-on
- inner inserts that protect lenses from dirt and scratches
- eyepieces that convert the clip-on into a handheld thermal device using the same bayonet interface
These additions expand the functionality of the device and simplify daily field use.
Conclusion
The Rusan Modular Adapter has proven to be a reliable and precisely engineered system.
Fast device interchange between different rifles and consistent repeatability are its main advantages over traditional clamp-style adapters.
With the available accessories, the system becomes a complete solution for users who frequently rely on thermal and night-vision clip-ons.