Originally posted by Sanguinity
I have a 3KDR, this is my best setup IMO
MP7
Atattchments: Suppresor, FMJ, Foregrip
Perk 1: Ghost, Flak Jaket
Perk 2: Scavenger
Perk 3: Tactical Mask
Lethal : Semtex
Wildcard: Tier 1
Not quite sure why you put FMJ on a SMG or Grip :p
I would go with fastmags or stock/quickdraw
Perks is subjective when it comes to class building attachments are to a point but give you a idea what perks to use. Suppresor in most classes means ghost.
M8A1 : Quickdraw, Fastmags
PDW : Quickdraw, Stock
MSMC : Quickdraw , Stock
FAL : Quickdraw , Fastmags
AN 94 : Quickdraw , Stock
Don't need to waste a perk on lightweight you can use flak

Small bonus from grip is not worth it but what do I know.