You heard correct. DICE has removed the fully automatic M16A3 from Battlefield 4 and have replaced it with the semi-automatic M16A4. For weeks following Gamescom people have been asking “What will beat the M16?” and “Can the M16 be beaten in Battlefield 4?” and now the answer is yes, because it is not in the game.
If you remember in my last M16 article I wrote about how people were trying their hardest to have the M16A3 nerfed in Battlefield 3 and that there were daily posts about how it is over powered. Well, once again the pendulum has swung and there are posts and petitions and pleas of mercy to bring back the M16A3.