Yup, the Automaton buildings with the flames coming out of the hatches.

• Any strikes aside from smoke and stuns (gas works if it's close enough or in a hatch)
  
• Any resupply, turrets or weapon drop pods [In vent or on top]
  
• Grenades [In vent] (any apart from smoke, gas and stun)
  
• Grenades cont...G-123 Thermite grenade [anywhere on the structure]
  
• GP-31 Grenade Pistol [In vent]
  
• R-36 Eruptor [In vent]
  
• Quasar Cannon [In vent]
  
• CB-9 Exploding Crossbow [In vent]

• Rocket launchers

Rocket launchers are able to damage fabricators anywhere with the 2 best being the AET (One shot) and the spear (also a one shot)