The Photosniper SLR-"guns" were made by KMZ. Maybe the conception behind these "shooters" was to give photographers who were gunmen a tool for shooting tele-exposures with a more quiet hand.

The Photosniper cameras were originally made for the Military for battlefield photography. The most famous user of the photosniper was Nikita Kruschev. It is rumored that he was actually the father of the modern photosniper. Supposedly his photosniper FS2 was broken and he took it to KMZ to be repaired. When he was told that it was no longer in production he said that that was too bad because it was really a useful camera. This was taken as a command by the management and the new photosniper was born. [1]

It used a modified Zenit E the Zenit ES (Cyrillic EC)

It used a modified Zenit 12 the Zenit 12S (Cyrillic 12C)

The Photosniper FS-12 rifle trigger operated SLR was delivered in a tin suitcase as a set with 58mm Helios lens and 300mm Tair tele lens. It was a Zenit 12S SLR body with M42 screw mount together with a rifle-stock-like device that served as a combination of shoulder/hands "tripod" and shutter release device. The focusing could be done by means of the metal wheel in the front of the gun stock.

It used a modified Zenit 12XP the Zenit 12XPS

It used a modified Zenit 122 the Zenit 122s

See also the article Zenit.