I should add that I am no way an expert on these weapons, being new to the game my self, and all of the info I have given you is from the book Backbone of the Wehrmacht. I just got it and love researching it for info, but if I am wrong in my information, others here with more knowledge will correct, as there are some discrepancies in the book.;)
"If a man has nothing greater to believe in than himself, he is a very lonely man".