Rusan MCR-M35P bayonet converter insert, clip-on side (Krypton, Proton) - for M52*0,75 clip-on bolt threads
Rusan quick release clamping adapter intermediate insert MCR side with bayonet pins. This part needs to be used for allowing to join different daytime riflescopes with separate front lens tube diameters to one specified clip-on in mere one moment, with only one-fourth rotation of the clip-on.
Specifically for Pulsar Krypton and Proton devices.