I have an R-61

http://www.sunblest.net/gun/FegR61.htm

It's actually a pretty well constructed firearm that's simple to
clean. It shoots well bt the triggers are really stiff ,but a gun
smiith took care of that. and I dont' mind the 9'mm Makarov round
either.
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I had a bursa thunder, made in South America, that looked very similar
to yours. It shot very well and had a ton of nice features.
Unfortunately, it had serious wear problems and I decided to get rid of
it after 300 rds.