From what I understand, West Rifle had the Ukraine insider or 'scout', North Sylva got the shipments out of the country (last one under armed guard) where they went to Germany for magazine mutilation, then to CA via Marstar. Shipments consist of one 44' container every 1 to 2 months loaded with 64crates/960rifles. This was the bulk of imports from the Ukraine circa 2008 - 2013/14 which consisted of "under 36K units" which I suspect means 35,520 units in 37 containers. In the same time frame there were also about 4 other smaller importers that obtained roughly 2 to 2.5 thousand units each. Also as mentioned, there was a late 1990s import batch that consisted of about 2.5k units.
Now, even if these numbers are not 100% accurate, it gives a conservative number of say 50k that I know of thus far. Surely if anyone reading this that has inside knowledge of other batches and their estimated quantities, please share what you know so we can have a tangible idea of the numbers with the least amount of 'imagination fantasy' as possible.
Thanks in advance.