Gameplay suggestion: Pistols, rifles, shotguns can't harm tanks and such

[Senyu]

Knives no

Pistol AP:Only able to slightly damage or extreme luck break a specific part of tank

Rifle AP:Better chance than pistol and a couple infantry focus firing should be able to bring down a specific part

Shotgun:Higher damage than Rifle AP on specific parts but of course must be close and slower reload time. Shotgun should have more luck on crippling parts

And all should do little damage to the vehicle as a whole compared to AV weapons. Though I can imagine running up to a parked buggy and sticking your shotgun right on the engine very much crippling it. Just hope you can actually find one parked long enough for you to do this.