I've tried this but tbh i get more with SKS/ QBU (4x sight, silenced, foregrip). I'm playing Rush BTW (just for clarity), its the only way to play battlefield.
Suppression isn't something that interests me. Any Bozo can set up a bipod and spray down a corridor for points. Also I'm OCD about keeping my KD above 1.
And reloading. After an engagement with LMG I'm constantly aware that I don't have a full clip. This will nag at me for the next 30-40 seconds until I give in and reload.
Thats usually when the enemy pops up.