In case you missed the original Tales of the Gun episode on the AK-47 when it aired in 2010, here it is. This is a very well done episode that goes into the history of the design and how it served in battle. Fans of the Kalashnikov will definitely want to watch this.
By the way, what I like about this particular Youtube video is that the quality is pretty good and it is the whole episode vs. being chopped up.