The Technical is the cheapest, awesomest, most easily manufactured infantry fighting vehicle (ifv) in the (third) world. Unlike the Killdozer, they require neither an engineering degree nor a missiom from God to manufacture. To be a technical, a vehicle must have two things:
1) A flatbed
2) A mounted gun
Technicals are most often pickup trucks, but are sometimes SUV's and other trucks modified to incorporate a flatbed. The most common Technical is built out of a Toyota pickup because of their reliablity and price in the third world. The Toyota Hilux (Tacoma) is a good choice. The flatbed mounts the Technical's gun. Light and heavy beltfed machineguns are common choices here, and when mounted in a good position will provide 360 degree machine gun support to a gunner standing in the flatbed, and usually leave enough room for other passengers in the flatbed. Ideally, a flatbed can hold four to six troops and a machine gunner, but your mileage may vary. This results in a gun truck, of the kind we've seen since machine guns were mounted on jeeps in World War II. However, the Technical is hardly limited to a machine gun. Often, technicals will mount whatever large weapon is handy. They've been seen mounting light towed artillery, recoilless rifles, and anti-aircraft guns. Obviously, some of these weapons would not work well with passengers in the flatbed. If they didn't result in the gunner artillery-whipping passengers with the barrel or vomiting superheated gasses all over them, the fantastic noise and flash of muzzle blasts would probably leave most passengers dazed and confused. RPG and LAW rockets make poor choices for Technical mounted guns because of their poor ammunition capacitiy, poor reloadability, and superheated exhaust.

Automatic grenade launchers provide excellent firepower in a very small package with no superheated exhaust. Flamethrowers often shoot napalm over some distance, destroying buildings and enemies alike in broad sweeps like a machine gun, and terrifying the enemy. Both are very effective against infantry, buildings, and light vehicles, with some effectiveness against armor, and both would make excellent Technical mounted guns, but both are uncommon in third world countries. It is, however, not entirely outside the realm of possiblity that the AGS-17 Soviet Grenade Machine Gun or the Norinco QLZ-87 might find their way to the third world. It's more common for weapons from communist countries to be found in the third world, like the AK series.

Technicals are said to get their name from Red Cross operations in Mogadishu, where the Red Cross paid local militias with armed jeeps, either for "protection" or for actual protection. The costs of this protection were then written off as "technical expenses".

Because Technicals are awesome, I've decided to maintain a photo gallery of them.

This is a Hezbullah technical, a Nissan with a mounted ZPU-4 antiaircraft gun. The gunner scores style points for huge muzzle flashes, but against the awesome hardcoreness of a Merkava he may as well be firing blanks.

This is a technical and crew of the Sudan Liberation Army, a group of awesome guys who're currently fighting the genocidal Janjaweed militia in Darfur. They're driving a Toyota. We assume that their bumper says something like, "if you can read this, you're too close" in Arabic. Their truck is covered hardcore in dirt, either because it's an awesome form of camouflage, or because it's hard to find a car wash in Sudan.

This is a cut-down Toyota Land Cruiser with 106mm recoilless rifle somewhere in Africa.

This technical has both AA and a mounted MG, proving that Somalians know how to multitask.

This Somali technical crew is dressing up in bright colors, which while impractical makes for awesome pictures. Also that's a hardcore gun they have mounted there. Dumbass idle speculators like us think that it's a DSHKM.

This shot shows off the carrying capacity of a technical. This particular technical is carrying a squad of unusually happy troops in Somalia.

This is a beat-up looking Toyota technical in Somalia.