I have an AK because the guy I got it from didn't need it anymore..... but that's another story that always gets better over the years
Anywho, the weapon helps me apply a long honored tactical tradition that applies to many things in life; "one is none, two is one, three is two.....". What that means is that if you only have one of an item, you basically have none because the laws of averages is sure to have it stop working, have it break, or you will lose it. So you carry two of certain things to ensure your survivability, or you may even carry three. In this case I already have a suppressed M4 carbine slung over my shoulder for doing my real fighting and distance work (my primary weapon), I have a 1911 pistol strapped to my right thigh (my secondary) and then the AK became a third weapon for urban operations, but actually has the likelyhood of being used first because it's sole purpose was for reaction to ambush and/or picking up the firing duties if my main gunner up top on the .50cal or mini gun needed to change ammo cans out because he went dry. This means no pause in returning fire towards the enemy's general direction while the main gun is down. As the driver, your duties are to DRIVE and not be involved in the rolling gun fight unless absolutely necessary.
This does have a little merit to it
AK's are built so cheap and are really such shit weapons because their machining tolerances are so loose, they rarely jam up, just keep on firing clean, dusty, muddy, wet, whatever. The best accuracy equals tight build tolerances, but means poor reliability in austere conditions. You have to find that sweet middle ground for combat guns.
but over the course of any war, conflict or event in the last 28 years or so, I have always come across one or two extra weapons.