You're right. Everything was BUILT mil-spec. But the components that made it into the final product were far out of tolerance and precision, not so mil-spec after all.
One thing I do like is the model numbers. Using TTs as an example
3xx 3rd class - piezo cartridge, plastics, cheap metal, simple electronics, noisy and unreliable mechanism, a lot of them were mono
2xx 2nd class - piezo OR MM cartridge, improved electronics and mechanism, Mix of better plastic, metal and wood, more features
1xx 1st class, hi-fi - much better electronics and more reliable, more complex mechanics, always MM cartridges, always stereo
0xx professional and expensive - Best quality, best reliability, new designs, cool looking (just look at that Korvet TT. LOOK AT IT!), much better sound
That "classes" system was revised some time when they raised their standards, so for an example the 1xx was now 2xx
You can tell what is good and what is crap just by looking at the model number.
Component quality was a HUGE problem. The Estonia 010 stereo set was engineered to be one of the best Soviet amps ever, and should have been comparable to some of the most expensive hi-fi gear in the world, but it ended up sounding mediocre at best. And that was due to off-spec components. Engineers at RRR and Estonia admitted that they were very disappointed with the end result.
Here is a story about how they got their designs:
Someone brought an Optonica hi-fi set from Japan. That guy asked the minister that why don't we make something like this, it's awesome. So the minister got all of RET's guys together and told them to build something like that. They just ripped of the design and engineered new guts for it. That's the story of how the Estonia 010 was born
And some of their speakers were crap too. Just look at the S90 speakers. Awesome drivers, complicated crossover networks, thick wood, plenty of acoustic damping. They have good bass response, yet, when it comes to mids and highs and detail and clean sound, they perform worse than some boombox "hi-fi" system speakers.