I have a friend that uses the boxes he gets from papa johns pizza (the long boxes their banner ads come in - not pizza boxes
). It will hold two AK's with room to spare for some padding (he wraps his AKs in a smallish blanket before putting them in the box). It might fool the neighbors as they wouldn't know what you have. Of course a mail label or ups label may make it look like you picked up a package.
Or one of the bass or cello cases (the older style bass not the electric bass) should be long enough - this is kind of along the lines of the fender guitar case idea mentioned already.
Or one of the bass or cello cases (the older style bass not the electric bass) should be long enough - this is kind of along the lines of the fender guitar case idea mentioned already.