I mean, that the MP44 is the predecessor to the AK47,
Has been widely accepted that this is Not the case.
Russia had been experimenting with assault rifles in the 1910 already (Italy already in 1905) and russia developed an intermediate cartigde before WW2. They also had several good prototypes but because of the start of WW2, Stalin felt it was impossibru to introduce a complete new standard cartidge. And Full auto prototypes already existed before The MKB 42 series.The one i talk about is the 7.62x41mm cartridge developed by Elisarov and Semin in 1942.
Mikhail kalasnikov had many good prototypes aswel but he felt it could be cheaper and better.
He based the locking lugs and trigger of the M1A1carbine/M1 garand(Based, not copied). The safety mechanism of the remington model 8
And he based the layout somewhat on the Mp44. And a few parts of the gas system where also used, together with other rifle designs.
This eventually became the AK. Any firearm designer will agree with the AK47. Why reinvent the wheel?
Each designer seems to have his own paths, his own successes and failures. But one thing is clear: before attempting to create something new, it is vital to have a good appreciation of everything that already exists in this field
While Mikhail kalash denied for years that the STG44 had anything to do with AK47, in the last decades he admitted that he used some of its design. Appearntly he was sick of hearing that people call the AK47 an "STG44 Russian copy". You cant blame the man for this.
As the STG44 took other design elements, so did the AK47. So did the FG42, Garand and others.
Very few weapon designs are identical.
The 7.62x39mm M43 issent exactly based on the 7.92x33. Both are completly diffrent designs. But if you would take an identical factory, you make both these rounds of simular quality and put them in simular guns, the 7.62x39 would win against the 7.92x33
In other words=The russians (And mikhail kalashikov) had been experimenting with assault rifles far before the germans. But because of wartime situations they dropped it. Otherwise they would have had it before the germans.
The germans proofed however, by taking a risk, they COULD introduce a new weapon +cartidge in a war. It dint changed the war, but you have to respect that super stubborn mentality.