The connection between your Cheetah and the Rusan adapter
To properly mount a HIKMICRO Cheetah in front of a scope, the system consists of two distinct elements.
The adapter Rusan Q-R M52x0.75 first attaches around the objective of your scope. Its diameter must be chosen precisely based on the outer diameter of the scope.
This reduction ring then ensures the connection between this adapter and your HIKMICRO Cheetah.
The principle is therefore simple:
Scope → Rusan Q-R M52x0.75 Adapter → Reduction Ring → HIKMICRO Cheetah
The ring alone does not allow you to attach the Cheetah directly to your scope.

Two pieces to obtain the complete setup
1. The Rusan Q-R M52x0.75 adapter
This is the piece that attaches directly around the objective of your scope.
It is available in many diameters. To choose the right size, you need to measure the outer diameter of the objective of your scope with a caliper.
Note: on a scope 3-8x56, for example, the number 56 corresponds to the diameter of the lens and not the outer diameter needed to choose the adapter.
2. The reduction ring for HIKMICRO Cheetah
This is the piece shown on this sheet.
It complements the Rusan adapter and provides the necessary interface to receive the Cheetah.
If you already have the Rusan Q-R adapter corresponding to the diameter of your scope, you only need this ring to complete the setup of your Cheetah.
What do you need to mount your Cheetah?
For a complete configuration, plan for:
- Your scope
- A Rusan Q-R M52x0.75 adapter of the correct diameter
- This reduction ring for HIKMICRO Cheetah
- Your HIKMICRO Cheetah
The reduction ring and the Rusan Q-R adapter are two distinct products.
If you do not have either, be sure to also order the Rusan Q-R M52x0.75 adapter corresponding to the outer diameter of your scope.

To be used with the Rusan Q-R M52x0.75 adapter
This reduction ring constitutes the connection between your HIKMICRO Cheetah and the Rusan Q-R M52x0.75 adapter. To achieve a complete setup, you must have both elements: the Rusan Q-R adapter, chosen according to the outer diameter of your scope's objective, then this reduction ring, which allows you to connect the Cheetah.
What to remember
The Rusan reduction ring for HIKMICRO Cheetah is the part that connects your Cheetah to the Rusan Q-R M52x0.75 adapter mounted on your scope.
It does not replace the Rusan adapter and is not chosen based on the diameter of your scope.
It is the Rusan Q-R adapter that must match the outer diameter of the objective. The ring corresponds to the interface of your HIKMICRO Cheetah.
For a complete setup: Rusan Q-R adapter + Cheetah reduction ring.
FAQ - Frequently Asked Questions
No. It must be used with a Rusan Q-R M52x0.75 adapter suitable for the outer diameter of your scope.
No. The choice of diameter concerns the Rusan Q-R adapter that goes around your scope. This ring then ensures the connection with the Cheetah.
If your adapter has the M52x0.75 interface and is correctly sized for your scope, this ring complements it for mounting the compatible Cheetah.
Measure the outer diameter of your scope's objective with calipers. Do not rely on the lens diameter marked on the scope: a 3-8x56 scope does not automatically require a 56 mm adapter.
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