Favourite weapon for every class.

My second favourite carbine is definitely the NS-11 C, closely followed by the af-19 mercenary. The ns weapons are the most reliable guns imo.

LA and Engineer: GD-23 Razor
Medic: Gauss Rifle
HA: Gauss SAW
Infiltrator: Longshot

HA: MSW-R
LA: Jaguar
Medic: TAR
Engineer: Jaguar
Infiltrator: SOAS-20

I do quite like the Jag with the adv laser sight hip firing but still doesn't seem amazing.

Short Range:
Infil: Blitz
Light: GD-7F
Medic: Carnage AR
Engi: GD-7F
Heavy: Jackhammer
MAX: Scats or Mattocks

Medium Range:
Infil: Shadow
Light: GD-7F
Medic: Carnage AR
Engi: GD-7F
Heavy: Anchor
MAX: Mattocks or Falcons

Long Range:
Infil: Longshot
Light: Mercenary
Medic: Reaper DMR
Engi: Warden
Heavy: Gauss SAW
MAX: Ravens

The Jag was nerfed in the last balance patch, but it's still beastly in CQC. It can effectively reach out to ~40 meters. My go-to weapon as LA in Biolab fights.