I may be late or something idk.
The AK-47 in Call of Duty 4 looked a lot more like the ones you see in real life. Every assault rifle in MW2 looks like they were futurized. With randoms clips on the side, and oversized stocks.
Yes, I have seen a real AK-47. I know someone who owns a whole stuffload of guns.
Fun fact: A single Barret .50 round costs about $60 right now.