Somewhere online there's an animated "Whipping The Dead Horse" gif.
"Accurate" . . . The 5.56 stuff is more accurate than the 7.62 X 39 -- mostly because of the guns they come out of. 300 metres, AK does just fine at keeping the heads down. If they get closer, you can actually kill them.
I think the .223 cal. bullet is a bit on the small, light side for anti-personnel stuff. More and more combat troops are beginning to agree with me.
SIG SAUER, Heckler/Koch have come up with a system where the exhaust gasses don't enter the cylinder to cycle the gun. That solves the reliability issue for the most part.
I put a SIG STS 081 Mini Red Dot on mine.
I wish they came with a standard web sling.
You should own an AK too.