Made in Yugoslavia by GORENJA IZ VELENJA until 1979, then in Slovenia (currently manufactured) by ORBIS. It's in .22-LR, and it is a submachinegun; the drum holds 200 rounds, and it fires at a blisterling rate of fire of 1200 RPM, which however results practical when you fire a so small caliber, furthermore it's almost the only way to make it be effective in modern combat situations. It was also equippable with a very very effective sound suppressor, and with a large laser pointer. OHIO ORDNANCE WORKS has a sample of this gun for sale to Military and LE displayed in their website. I also have in my pictures collection two different shots of this SMG with sound suppressor.
Photo and information from: Kthulhu & Pierangelo Tendas