From what I understand the russians made the plum stocks by mistake trying to get a black polymer. The plum ended up being stronger than the original black stocks. There may be more to the story but this is what I have heard. The U.S. plum stock from k-var is about middle of the road for plum stocks. Some of the non-U.S. plum stocks are lighter some are darker.saintarctangent said:What's the history behind the plum colored stocks. Seems like a strange color for a military rifle. I get the impression that having plum stocks is a good thing.