Welp, these would definately qualify as Technicals.
It's not such an uncommon practice, really. One can usualy modify a civilian truck to carry weapons if one knows their stuff. I heard on this site that some SUV's are being armed with remote-control Defense Turrets, and the use of Technicals in Somalia and Iraq is well documented. They have been used for decades in other countries and are actualy pretty successful if used correctly.
This bad boy is using a ZPU-2 Anti-Air gun. I dont even want to know what that did to the suspension.
Usualy, the trucks are straight civilian, though some are modified with armor in a modification shop. Alot of times though, these guys will scrounge up anything they can find to plaster around the engine compartment. The Iraqi Police force and the U.S Forces there will use Kevlar Blankets, Sandbags, Sheet Metal, old Ballistic Glass and even Plywood. This is called 'Hillbilly Armor' or 'Farmer Armor' in the U.S Army, and 'Haji' by Iraqi's. The Stryker's 'Slat' armor was actualy bassed on the principle of an Anti-RPG system that was originaly used by WW2 Germany and Russia, and was largely an improvised system, so I have heard.
Hope that helps, ahho.
Off subject, sometimes me and some of my friends like to refer to them as 'Ghetto Tanks', though this obviously is not offical.