While Hugo was at Izhevsk, Mikhail designed the AK at Kovrov. Little or nothing of the AK was similar to German weapons. Hugo probably helped with the metal stamping process. How do you know that Hugo (and other Germans) did indeed work under Mikhail?
I don’t. That was a response to someone else who claimed that he had. At the time I assumed he knew what he was talking about.
In his book “The Gun” CJ Chiver asserts that
(1)Schmeisser was part of the team where the AK was first mass produced, Page 152.
(2) Kalashnikov’s design team tinkered with variations of Schmeisser’s trigger Page 192
(3) Schmeisser was in Izhevsk after the war, was familiar with the difficult path from prototype to production, having gone through many redesigns with his Stg-44.Page 207
(4) “The original AK-47 did not lend itself to available Soviet manufacturing processes” page 208.
(5) “What is uncontested is that Kalashnikov’s original design was phased out.” Page 209
(6) Note 16, personal contact from a biographer of Schmeisser in Germany, notes that what Schmeisser did in Izhevsk is still kept secret by Russia. P. 433