AK 47s cannot be imported.
Parts kits, everything except the receiver can be imported freely, and assembled on American made receivers.
Some few Kalashnikov action weapons like the Saiga can be imported because they are made to look like hunting rifles. (Frankenguns?) Thank you "Slick Willie" Klinton.
If you wish to convert a Saiga to an AK, you have to make it 922 compliant which isn't cheap.
And I looked, and behold a pale horse: and his name that sat on him was Death, and Hell followed with him. And power was given unto them over the fourth part of the earth, to kill with sword, and with hunger, and with death, and with the beasts of the earth.