Pribor-3B nordenfelt gun
 

Man-portable nordenfelt gun of the soviet era. It apparently fired like a minigun and to be suitable for a soldier to handle, but ammo supply was limited being magazine fed.

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The Pribor-3B still worked but was also quite hard to control due to the recoil force, Cartridge ejection is downwards BEHIND the magazine area as the weapon uses a gas/recoil operaton similar to that used in the AN94 Abakan assault rifle currently used by Russian special forces. The Pribor-3B would be more practical as a tripod mounted MG if its possible to make a belt feed device for it.