From Guns.com:

The two bills addressing self-completed firearms, S.13A/A.2666A and S.7152/A.6522, in tandem outlaw the possession of unfinished frames or receivers by anyone other than a licensed gunsmith or firearms dealer and prohibit the sale of such items. Further, the new laws require gunsmiths and FFLs to register such incomplete guns in their possession. Violations run from Class D to Class E felonies, the latter of which can bring five years in prison and is on the same level as some manslaughter convictions.