From G&G’s Parts and Accessories Series, We have the RK74 Rotary Hop Unit
The RK74 Rotary Hop Unit
This is a OEM Rotary Hop Unit which comes as standard on many of G&G’s AK Replicas. It is a well regarded OEM Hop Unit and can be an effective aftermarket upgrade. It features rotary adjustment with numerous clicks for each position ensuring it will stay locked in once adjusted and is made from a Zinc/Aluminium Alloy.
Compatibility
This Hop Unit is compatible with G&G’s RK Series but has also been found to be compatible with several other brands of AK including those from CYMA, However, varying degrees of modification to the RIF are usually needed to ensure correct fitment.