Helldivers 2

Everyone who keeps saying shoot the vents, read the post again please. OP specified the Barrager tank, which has no vents.

https://helldivers.wiki.gg/wiki/Barrager_Tank

OP, according to the wiki you can just shoot the top of it with Recoilless or any anti tank gun, and lacking that the rear of the body is medium armor.

Quoted from wiki: Unlike other Tank turrets, the Barrager's MRL lacks a vent weak spot. However, the MRL itself is a large target susceptible to anti-tank weaponry such as the GR-8 Recoilless Rifle or G-123 Thermite. If a Helldiver lacks anti-tank weaponry, the rear of the Barrager's hull can be damaged by medium armor-piercing weaponry like the AC-8 Autocannon.

Thermite throw and forget

2 shots with the Commando on the turret

Spear is also a direct kill

Auto cannon to the rear, I recommend you start carrying thermite. I made the switch a while ago it's super useful

The back of the tank's main body has some vents that are weak points autocannon can destroy. Although sometimes when you do that the turret survives the death of the main body and still keeps shooting. As far as I know the barrager turret itself has no weak points, so it takes anti-tank damage to kill it. They should fix both of those things IMO (the turret surviving the body's death and having no weak points).

The weak point should be the on the back side of the turret. If I remember right you also can shoot the tracks or the back of the lower part from aside but it's far less effective.

Recoilless rifle at the base of the turret works for me.