Indeed if one ends up on the wrong side of a large group of AKs, which will likely be full auto as outlaws will not bother with legal weapons, I would rather have effective AND efficient firepower to oppose them. One is better off with a serious self reloading rifle such as the Springfield Armory Scout or any similar rifle. The fact that the army still uses the M14 should give a hint about its usefulness. I would favor the 7.62 just to make sure that every time the trigger is pulled there is a result on the other side of the perimeter. This is the deciding factor; the AK wielding crowd does not care what any single bullet does, the opposing security team instead must ensure every bullet reaches its mark. The semi auto AK just cannot do that beyond 50 yards. It does not matter how fantastic the purchase deal was; when you actually need this thing to shoot precisely beyond 50 yards you may be greatly disappointed. If the 7.62mm is not an option wise people will pick 5.56mm quality self loading rifles such as the AR15 or the FN 2000. The larger caliber of course offers more options, especially if beyond self defense hunting becomes a necessity.
When a small team is considering being attacked by a large number of AKs in full auto mode, it is obvious that a smaller number of AKs limited to semi auto mode will not change the balance. That same team would have a better fighting chance with a half dozen scoped Scout rifles capable of hitting their mark almost every time. The Kalashnikov may be both cheap and good, but when your life is at stakes you will want a gun that is truly superior to that of your foes.
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