Can anyone out there tell me what are the precise differences betwenn the Beretta S 686 E and the Beretta 686 E. The 686 E i refer to is not he 686 Essential. I own 2 S 686 E, a 12 ga and a 20 ga. I have seen pictures of the 686 E and both models have the same sunburst engraving, schnobel fore end and appear the same. There must be some difference. What?