I went through and calculated all of the AK and AK variants produced around the world. I only came up with 50 million rifles. Russian production numbers were a lot less than I had thought.
Russian production:
Milled AK's: 5 million
AKM's: 10 million (Half given away as military aid)
AK-74's: 5 million
All other variants: less than 5 million.
China: 15 million AK's of all variants. Perhaps 5 million more produced in secret and given away as military aid.
All others: less than 5 million.
The old man says the number is 70 million, but that is probably a tad over optimistic on his part. Most of the smaller nations received considerable amounts of AKM's as military aid. Production numbers from sattelite countries is considerably less than you would think. Maybe 40,000 rifles here, 75,000 there. Nothing to come close to 100 million rifles. Even Galil and Valmet production was rather limited.