TheRusan reduction ring for the ARM52 adapter is a special connector needed to attach the HIKMICRO Thunder/Thunder PRO thermal imaging sight to a day scope.
Dedicated reduction ring for Rusan adapter
In case you have a cap with a thread other than M52×0.75, its mounting to the scope in addition to the Rusan buckle adapter requires a special reduction ring. Rusan reduction rings are available in our offer for the most popular models of thermal and night-vision caps. Mounting the ring to the Rusan adapter takes just a few seconds and requires no tools.
The ring is dedicated to HIKMICRO Thunder/Thunder Pro thermal imaging sights.
