Rusan adapter for devices with thread M52x0.75 - 40 mm (v.2017)
Rusan ARM52-40 M52x0.75 – 40 mm
Rusan ARM52-40 is a Q-R clamp-on adapter for connecting compatible night vision and thermal clip-on devices to a daytime riflescope. Version v.2017 uses an M52x0.75 thread for attaching the device, while the clamping section is designed for riflescope objective housings with an external diameter of 40 mm.
The Q-R mechanism allows quick installation and removal of the adapter, while the aluminium construction provides a practical mounting solution for compatible clip-on devices.
Important: the 40 mm dimension refers to the external diameter of the objective housing, not the diameter of the front lens. Before purchase, check the actual external diameter of the objective housing with a caliper.
Compatibility
- Night vision and thermal clip-on devices with an M52x0.75 thread
- Devices that use an appropriate reducing ring
- Riflescopes with a 40 mm external objective housing diameter
Technical Specifications
Specification | Details |
Manufacturer | Rusan |
Model | ARM52-40 |
Version | v.2017 |
Type | Q-R clip-on adapter |
Device thread | M52x0.75 |
Housing diameter | 40 mm |
Mechanism | Q-R lever |
Material | Aluminium |
Intended use | Night vision and thermal clip-on devices |
During installation, position the adapter correctly on the objective housing and lock the Q-R lever. Before use, check the stability and tightness of the connection.
Professional Optics offers Rusan adapters in different sizes for compatible clip-on devices and riflescopes, with delivery across Croatia and Europe.

