Nearly two years after the start of Syria's popular uprising, the conflict has evolved into a slow-moving, brutal civil war with many players and no clear end in sight. Multiple rebel groups across the country continue to fight President Bashar al-Assad's forces, using any weapons they can get their hands on. While the rebels are using many modern weapons, they've also come up with their own makeshift solutions. In these weapons workshops, anti-aircraft guns are welded to pickup trucks and armor shields are attached to machine guns and cars. Mortar shell nose cones are turned on lathes and explosives are mixed by hand. Homemade grenades are launched by jury-rigged shotguns or giant slingshots in the urban battlefields of Aleppo and Damascus. Gathered here are a few examples of the hand-built munitions of the Syrian rebels.
Syrian rebels prepare to launch a bomb using a homemade slingshot in the northern city of Aleppo, on October 16, 2012. Lightly-armed Syrian rebels who face the warplanes, artillery and tanks of loyalists have turned to making their own weapons, even rigging a video game controller to fire mortar rounds.
(Tauseef Mustafa/AFP/Getty Images)
A young man works on the production of hand made missiles in a secret factory in Al-Bab, 30 kilometers from Aleppo, on January 19, 2013. Unexploded bombs are collected after government shelling, and their components are recycled by rebel groups. Each day, nearly 50 missiles are assembled for the Abu baker Brigade.
(Edouard Elias/AFP/Getty Images)
Rebel fighters prepare to fight against Syrian regime forces in the village of Kurnaz, close to the western city of Hama, on January 27, 2013. More than a dozen rebel fighters took up defensive positions in Kurnaz with light weapons against Syrian army tanks roughly four kilometers distant which were firing shells around them.
(Aamir Qureshi/AFP/Getty Images)
A Syrian rebel walks past Sham 2, a homemade armored vehicle, in Bishqatin, Syria, on December 8, 2012. From a distance it looks rather like a big rusty metal box but closer inspection reveals a homemade armored vehicle waiting to be deployed. Sham II, named after ancient Syria, is built from the chassis of a car and touted by rebels as "100 percent made in Syria."
(Herve Bar/AFP/Getty Images)
A bomb maker from Abu Suleiman's group of rebel fighters wires pipe bombs, which are detonated in specific areas to cut access to their mountainous stronghold in the northern Syrian province of Idlib, on March 20, 2012. Abu Suleiman, who finances the weapons for the unit which carries his name, has assembled one of the multitude of armed groups fighting the regime.
(Frederic Lafargue/AFP/Getty Images)
A Free Syrian Army Fighter, on a vehicle mounted with an anti-aircraft artillery weapon, speaks with his comrade before heading to Wadi al-Deif, where clashes with forces loyal to Syria's President Bashar al-Assad is taking place in Idlib, on February 6, 2013.
(Reuters/Raed Al-Fares/Shaam News Network)
Rebel arms maker Abu al-Fadhel shows off a row of homemade weapons including a hand-grenade, a portable rocket-launcher, and various rockets with explosive warheads at a location in Aleppo province, on October 17, 2012. Lightly-armed Syrian rebels who face the warplanes, artillery and tanks of President Bashar al-Assad's forces have turned to making their own weapons to fill major gaps in their armories.
(Tauseef Mustafa/AFP/Getty Images)