The volkssturmgewehr is a last ditch rifle developed by the wehrmacht in february 1945 as a cheap gun to give to the volkssturm. This gun had the advantage of being cheap and also semi automatic, while the kar98k was more expensive and bolt action.
So, ten years before in 1935 germany adopted the kar98k as their main rifle and used it during WWII. Let's say that germany had developed this rifle instead, what changes would happen during the war?