But, of course, the got something wrong.
Designed in 1945 by former Russian tank gunner Mikhail Kalashnikov, the AK-47 was the first gun to bridge the gap between submachine guns and long, heavy rifles.
Nope, not hardly. The first assault rifle was the German StG44 from WWII. Here’s a picture of a German soldier using one during the Battle of the Bulge.