I like to call AK sights 'No bullshit sights'. Mainly because they are what they are. With other guns you'll have peepsights and all of this other shit around it (Think standard M4 sights) that are sometimes a pain.
What I do is just put the AK rear sight to its lowest setting, and let the hoop of the front sight rest ontop of that. No bullshit, airsoft isn't accurate enough for it to require you to line up properly so it works just dandy.
Give that method a try and see how you like it. If optics are really, really a must. You could just get a rail that replaces the rear sight, and slap on a t1 micro on it. But that'd look nasty.
Best of luck.