You guys are just complaining because a relic dev hinted they'd nerf the quad if they found it to be OP. It is not OP.
Use Pak, even some small arms fire with Pak will kill it. With schreks and pak it has no chance at all.
Flank the truck like other inf flank HMG's. Lay mines. Build early AT. L2P.
#Adapt.
1) Isn't it immune to small arms fire?
2) It have no limited arc of fire. It is 360noscope.