title says it all...
my opinion:
Both are great weapons and deserve remorse for serving the two super powers on our planet, but I have to go with the AK =P~ . It's much more reliable, very easy to disassemble and clean, throws a bigger bullet, I personally like the feel better than an AR, and when the zombies come or if the world goes into anarchy, what type of ammo, parts, and replacements will be most common in the world? My only gripes with Ar15s is the gas system, bullet (too small .003mm bigger than a .22), and the bolt disassembly (to complicated in my opinion). I don't know what Eugene Stoner was thinking when he designed the "direct gas system" :roll: (gas is diverted directly into the bolt to propel it back).
P.S. Ar15s are very accurate and can hit a target from very far away (around EDITED>500m).
AK47s are not as accurate, but still get the job done (based on experience on the range). Contrary to popular belief, they are not inaccurate. That statement was based of soldiers watching untrained conscripts shoot randomly at them and failing to put a bullet anywhere near them.