IMPROVISED EXPLOSIVE DEVICES (IEDs)
One of the most effective DIY weapons used by the Syrian opposition is the IED, which has allowed the Syrian opposition to take on armored vehicles and effectively turn certain areas into no-go zones for troops in unarmored vehicles. As the use of IEDs increasingly limits troop movements, New York Times journalist C.J. Chivers wrote that the situation meant "the Syrian army is finished."
IEDs come in different shapes and sizes: Gas cylinders filled with explosives can make a simple bomb, while metal tubes with a concave end can be manufactured into an armor-piercing projectile. They can also be detonated using a variety of methods: by wire, radio, or cell phone -- all methods easily accessible to the opposition.