FAL with the select fire/stock/rds Ghost/Hardline Toughness Dexterity or Tactical Mask
The reason why I don't use the silencer is because I don't go balls deep with this class and always stay with the team. I personally don't think you really need the silencer all that much unless you're constantly going into the enemy spawn.
for guns like the swat, fal, smr, m8a1, I feel like you really need to get your shots on target so i tend to use the reflex and then i never use the silencer on this gun just because im not going balls deep into the enemy spawns. plus, the silencer really hinders this gun's range capabilities.
'The reason why I never use the silencer is because I feel moe powerful without it. And for some reason, the FAL or the SMR with the silencer gets me tons of hitmarkers. But then when I take it off, I get those 2-3 shot kills very quickly. I hate the silencer on the FAL or the SMR.