THESE HOP UNITS ARE ONLY COMPATIBLE WITH A GENESIS KC-VSR NOZZLE/CYLINDER. THEY DO NOT WORK WITH THE STANDARD PLASTIC KC-02 NOZZLE, NOR OUR METAL KC-GBB NOZZLES.
These hop units are the most up-to-date design of the Genesis hop unit from RogueWorx. V5 is denoted by the gold colour.
V4 is denoted by red colour.
V5 has the smoothest feeding operation when used with STANDARD KJW LONG MAGAZINES. The V5 design was specifically updated to have a shallower feeding ramp with a tighter diameter, so the BB would be more easily guided into the hop rubber by the nozzle. This makes cycling smoother, especially when used with an SSB or underlever.
This change, however, proved to cause compatibility problems with some hpa-magazine adaptors such as the Tanuki mp5 adaptor, as it relied on a wide feed ramp design in the V3 and V3.1 adaptors.
So the current batch of Genesis kits have reverted back to using the V4 red hop unit design which still works fine with adaptors. V4 red was the standard hop unit version for the Genesis kit for 3 years from 2018 to 2021, there's nothing wrong with it, we sold hundreds of them.
This hop unit is not supplied with any hop keys or other parts. It is compatible with all other versions of Genesis components.