The AK series is hard to beat in most any scenario. Logistics and maintenance are not usually much of a problem most anywhere. They can be fixed practically with a file, baling wire and chewing gum. Also you usually aren't singled out for your sound signature. Then again there's always a deal somewhere on AKs if finances aren't willing.
If these aren't considerations have you looked at Sigs or possibly the new-style FALs being put out nowadays? FAL logistics supposedly isn't too bad either with over 90 countries having adopted it at one time or another. DSA www.dsarms.com
makes an 11" barrelled FA that might be worth looking into. Plus with a FAL you get to keep the 7.62 though you have the ammo to lug with it