This body has has special baseplate, with an appendix which plugs into the photosniper handle, allowing to release the shutter using the trigger of the “photographic rifle”, and a protruding eyesight. I fitted a Zenit E baseplate, allowing me to put it down horizontally.
The baseplate, with the shutter-release appendix.
Backside view , for the protruding eyesight, with it's original rubber eyepiece.