Primary Weapons are a Far Cry 2 specific category.
Primary Weapons are the bread and butter for an everyday mercenary. Primary weapons consist of two handed guns, such as assault rifles, shotguns, sniper rifles, a sub-machine gun and a grenade launcher. Some weapons are reliable, while others corrode quickly and jam a lot. Many of these weapons are unique in their own way, like the AR-16 with its green dot scope and three round burst, the Silent MP5 with its suppressor, or the AK-47 and its golden version. The most explosive primary weapon is the Milkor MGL-140. It has a scope and fires 40mm grenades.