Call of Duty recently had problems with FR 5.56 that was being exploited by many gamers and the good news is: it has been fixed!
Weapon combo problems were being brought up by many steamers and this combo was surprisingly destructive.
It got insane power with it as it out-ranged any other weapon in the whole game while you could shoot down fully armored opponents with a single shot no matter the target is as far as 25 meters away.
Infinity Ward recognized this and asked the audience to be patient in their latest tweet after which the issue was fixed.
Although the FR 5.56 isn’t a popular choice, such news spreads like fire because of which its use got an upsurge. The community also understood that developers are monitoring channels and are ready to show speedy bug recoveries.