The FSA shows in a video that they have anti-tank weapons and that they are capable of firing them. The video shows how an FSA soldier uses an ATGM to hit an building.
An anti-tank missile (ATM), anti-tank guided missile (ATGM), anti-tank guided weapon (ATGW) or anti-armor guided weapon, is a guided missile primarily designed to hit and destroy heavily-armored military vehicles.
The Free Syrian Army (Arabic: الجيش السوري الحر, Al-Jayš Al-Suri Al-Ḥurr, FSA) is the main armed opposition structure operating in Syria that has been active during the Syrian civil war. Composed of defected Syrian Armed Forces personnel and volunteers, its formation was announced on 29 July 2011 in a video released on the internet by a uniformed group of deserters from the Syrian military who called upon members of the Syrian army to defect and join them.