User blog comment:Angel of Anarchy/DICE releases video on new Battlelog features for BF4./@comment-2092722-20130727171252/@comment-5124635-20130728162639

I assume it'd probably be semi, as while the M14 is full-auto in reality, it's usually semi in games. (BF:V, CoD4, BFBC2) While it's possible it could be auto, semi could be more likely, especially if they want to classify it as a DMR.