Maybe abundant in the military but not in civilian hands for home defence.
Also wouldn't you need training in using something like this to pick out a helicopter?
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A quick search of the internet shows rather a lot of Russian made RPG30's in rebel hands.
en.wikipedia.org/wiki/RPG-30
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Cerebus Sticky! Sticky! Stick! Stick!, Fri 2 May 2014, 8:59,
Reply)
This or some luck.
Maybe it's not early nineties, but I would bet there are some in civilian hands in post-soviet area still.
Mind, only point I'm trying to prove, is that it is not exactly far fetched.
See Mi-24 and RPG-7 in Afghanistan.
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omnitruncatedkraken from Empire Algol, Fri 2 May 2014, 9:08,
Reply)
If it were RPG7s then I would believe that.
Click for bigger (185 kb)
What they have looks a lot more modern.
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Cerebus Sticky! Sticky! Stick! Stick!, Fri 2 May 2014, 9:41,
Reply)