Yes....
it is legal to manufacture an AK pistol. First you need a receiver that has NEVER been completed into a rifle. Then you must manufacture it without creating a new "assault weapon" which is:
(c) A semiautomatic pistol that has an ability to accept a detachable magazine and has at least 2 of -
(1) An ammunition magazine that attaches to the pistol outside of the pistol grip,
(2) A threaded barrel capable of accepting a barrel extender, flash
suppressor, forward handgrip, or silencer,
(3) A shroud that is attached to, or partially or completely
encircles, the barrel and that permits the shooter to hold the firearm with the nontrigger hand without being burned,
(4) A manufactured weight of 50 ounces or more when the pistol is unloaded, and
(5) A semiautomatic version of an automatic firearm; and
Hard part would be keeping it under 50 ounces.