Nah, nah. It's just an AK. Do whatever you want to it. Even in real life you don't baby 'em or clean 'em or anything. Just spit on it and maybe rack the slide a few times when you're done shooting, then throw it back into the gun closet and call it a day. Meh, it'll be allright. 
I'd give her a bit more respect than that. That's what you do when you have no time for anything else, and she'll still work.
Actually, I heard a story from some folks back from The Sandbox where they captured one fellow that charged at them spraying bullets everywhere but where they were (Didn't even hit the truck!), and they found the sights on his Kalash knock-off were set at maximum range, which was 300 metres.
"That is the setting so that we can kill that many infidels." He told them through a translator.
The flipside is, Afghanistan is horrendous on equipment of any sort, but SMLEs and AKs are the weapons of choice for the people that live there, as they're reliable even under those harsh conditions.