one thing most people don't consider -- if germany designed the AK-- why did they not field the excellent, reliable cheap and quick to make AK instead?
how about the tank many think is the best all around tank of WW2 ??--that is a russian design the T-34! people are quick to discount russian hardware --but whos tanks came crashing through the gates of berlin in 1945?
i don't think klash designed the modern AK all by himself though he did pen the idea. lots of people worked on it and it was re-designed several time to meet reliability standards and speed up production/cut costs. it was also changed from a 45mm length case to the short & very tapered 39mm SKS designed round. i also read some were that the russians even considered going to 6mm/6.5/6.8 bullets, but stuck to the .311s because all their machinery was set up to make the .30s and it would have required a re-tooling to go anything else.
another thing most don't consider --war time shortages and deadlines-- they probably had millions of .311 barrel blanks and billions of .311 bullets warehoused--
why was the M2 version of the M1 carbine late and missed D-day? the mags wern't ready and the machinery was slow to produce the full auto parts so the m2 was late to the party.
the M1 garand & SKS used clips --because imagine what it would have took to make millions functioning box mags by d-day!
i sure the designers all considered box mags at one time or another but decided to go with metal clips to cut production time.
the technology to build an "assault weapon" had been around long before WW2 -- looking back it seems difficult to imagine that NONE of the major powers in WW2 had a true "assault weapon" before the war started. not much work even went into the sub-machine guns and they were used very hard, i suspect that it was the PPSH that got the soviets into the AK game as they wanted a sub gun that has a little more range but still cheap and quick to make.
it is a big oversight by the USA, germany ,britan, japan and russia that no mid powered, box feed gas-operated weapon with semi and full automatic operation was developed prior to the war. it seems that an infantry mans weapon --just was not a priority like it should have been.