Only if you are a weak, poor shot who rips out huge bursts. I would pick a Russian AK over a plastic Ameri-rifle any day. Consider the ease with which the M-16 or M-4 (and their variants) will jam up with dirt, or even moisture; the fact that people have been known to receive multiple 5.56x45mm rounds and walk away; the low visibility sights... the case of AK and variants versus M-16 and variants is a no brainer. If you time your semi auto shots, have more strength than a 10 year old, and keep automatic bursts short and controlled, an AK is quite accurate at the engagement ranges where most firefights occur, and might actually put someone down when you shoot them. Hell, 5.56x45 (and .223) are illegal to hunt deer with. You gonna shoot a person with that?
I remember in Shadow of Chernobyl, obliterating all the personnel in the military base behind the first villa that Marked One starts out in. Sure, when I started taking out the patrol along the road, the whole base moved to come find me, and kill me. I ran back to and hid in the villa while the military slaughtered every One. The AI in STALKER is awesome, and that moment was truly spectacular. It took a few days in the game for the military to disperse, but I had to go back and clear out the base. I got so much loot from it! Great times.
Thank You for paying homage to an underrated game.