MP7 (very weak but high ROF)
Mods: BB, MI, Ergo
Veresk (Great all-around DPS with good armor penetration)
Mods: BB, Mag, Ergo
Kriss (Powerful bullets with great stability)
Famas MK3 (Geared towards CQC users with high ROF)
Mods: Auto trig
SG556 (Has excelent crouchshot stability/accuracy)
Mods: LRBII, Proto, RCS
Para (High recoil/bloom but crazy damage and decent ROF)
Mods: all preference based.
XM8 (Annoyingly good stability and solid damage)
Mods: Param trig
R4 (Stable and accurate but a little weaker)
Mods: LRB or BB.