Why using a Rusan Clip-On Adapter?
The Rusan clip-on thermal adapter is the most popular and trusted modular quick-release system designed to securely attach thermal or night vision clip-on devices to the objective bell of daytime rifle scopes.
Key Features:
- Quick-Release Mechanism: The adapter screws onto your thermal clip-on (with M52, M33.5 or other threads) and then clamps onto the front of your day scope’s objective lens. A simple lever locks it in place, making it easy to attach and detach.
- Compatibility: Works with a wide range of thermal clip-ons. You need to select the correct adapter size based on the outside diameter of your scope’s objective housing (not the lens size). Use calipers for precise measurement.
- Adjustable Fit: The adapter includes a tool for fine-tuning the fit, ensuring a snug but non-damaging grip on your scope.
- Durability: Made to be weather-resistant and scratch-free, protecting both the adapter and your scope.
How to Choose the Right Adapter:
- Measure the outside diameter of your scope’s objective housing (in millimeters).
- Round up to the nearest whole number (e.g., 56.2mm → 57mm adapter).
- Refer to the Rusan fitment chart to match your scope model
- Select the right connector for your clip-on (MCRxx)
Why Rusan?
Rusan-Mikron, founded in 1983, is a Croatian company specializing in precision firearms accessories, particularly scope mounts, quick-release adapters. They are the leaders for thermal clip-ons accessories.










