Suggested class:
Intervention with acog
Stinger
Slight of hand pro
Stopping power pro
Steady aim pro
Tactical insertion.
Ive tried this and i much prefered the berret 50 cal, and i preferred commando pro, i do not have steady aim pro or slight of hand pro only the normal one of those so i can not say how those worked out but although i still do better using my tactics, if what i suggest doesn't work out for you, try this class and you may or may not like it.